Engineering Mechanics Practice Exam

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• Moment of inertia of an area about an axis is equal to the sum of moment of inertia about an axis passing through the centroid parallel to the given axis and _____.
• Which concept is a convenient corollary of the parallelogram law?
• In the analysis of a uniform flexible cable, which of the following is assumed?
• Which term describes periodic motion along a straight line, also known as translational harmonic motion?
• Planets orbiting the sun sweep out equal areas in equal time according to which law?
• If the orbital radius quadruples, the circular orbital velocity becomes:
• A simple beam is defined as a beam with how many supports and where?
• The perpendicular distance of the force from the point about which the body will turn is called
• The number of coordinates required to completely specify the dynamic state of an object is the
• The explicit form of the laws of mechanics depends on the reference frame, specifically an
• The ground reaction force on a body can be represented by a single force acting on a point called
• Which friction occurs when surfaces are sliding against each other?
• Compute the magnitude of the vector F = 3i + 4j + 12k N.
• The angle of inclined plane of a jack screw is also known as ______.
• The pendulum clock inventor mentioned in the material is which scientist?
• When the static friction limit is exceeded, the frictional force becomes what?
• This concept assumes that the substance of the body is distributed throughout and completely fills the space it occupies.
• The frictional forces that can result between two surfaces slide relative to each other are described as
• A couple tends to cause a rotation.
• What is the term for an additional force that exactly balances a resultant force?
• In the analysis of friction, the angle between the normal force and the resultant force _____ the angle of friction.
• Which method involves placing forces head-to-tail to determine the resultant?
• Which vector quantity is represented as a vector along the moment axis?
• Which branch of engineering mechanics studies the behavior of a stationary rigid body?
• Quantities that possess magnitude but require two or more directional aspects are called what?
• The minimum number of orthogonal components needed to represent a force in three-dimensional space is
• Kepler's second law states that the planet's orbital areas are swept out in what relation to time?
• A vector whose magnitude equals the rate of rotation is called
• If each point on the object has the same constant velocity, this is called ______.
• Which of the following best defines a simple pendulum?
• In a TS diagram, the area under the curve represents which thermodynamic quantity?
• A structure is _________ when the static equilibrium equations are not sufficient for determining the internal forces and reactions on that structure.
• Two bodies attract each other gravitationally. The force on each body has the same magnitude.
• For circular motion with speed v and radius r, the centripetal force is F = m v^2 / r. If v is doubled and r is doubled, how does the centripetal force change?
• Gravitational field strength at distance r from Earth's center is g(r) = μ / r^2. If r is doubled, g becomes:
• The path of a translating body with a curved trajectory is termed
• The magnitude of the resultant force of a distributed load equals the area under the loading curve.
• Which method predicts failure of a structure containing a crack?
• What refers to the force that holds part of the rigid body together?
• Which numerical method subdivides a solid into smaller elements to approximate solutions in continuum mechanics?
• If an object is stationary or moving at a constant velocity, which statement is true?
• If the lead angle is chosen such that there is no screwing moment, the device is called a
• The ____ expresses the relation between the external forces applied to a system of particles and the effective force on each particle of the system.
• For a circular orbit, the specific orbital energy E per unit mass is E = -μ/(2r). If the radius doubles, the energy becomes:
• When the loading is uniformly distributed horizontally the cable is analyzed as.
• The lines of action of all forces pass through a common point and lie in the same plane. This system is described as which?
• A physical quantity completely described by a real number is called __________.
• The simplest force system that can replace the original system without changing its external effect is
• Which branch refers to the study of a rigid body in motion under the action of forces?
• Which scenario would require more power?
• The force the ground exerts on a body in contact with the ground, in response to the contact, is called
• Which term describes a body in which all particles maintain fixed distances from one another during motion?
• The pendulum clock was developed by ______.
• A motion that repeats itself after a defined interval of time is known as which?
• The speed of rotation at which resonance occurs is called ________.
• The action lines are not in the same plane and intersect at a common point. This describes which type of system?
• The traditional unit equivalent to 550 ft-lb of work per sec, or 33,000 ft-lb of work per min, is horsepower.
• A 5-kg cart is at rest. A net force of 12 N acts for 0.25 s. What is the momentum change?
• A free-falling body moves in a straight line with constant what?
• In a perfectly elastic collision, kinetic energy is conserved.
• Which quantity represents the turning effect of a force about a given point?
• The maximum static friction force between two surfaces is proportional to the normal force by which relation?
• The minimum velocity of projection to escape a planet's gravitational pull is known as
• In uniform circular motion, which type of acceleration is present?
• It is sometimes called the scalar product.
• The angular momentum of a particle about a point is defined as the moment of linear momentum about that point.
• A general triangular object placed between two objects to hold them in place or to move one relative to the other is called a
• In fluids, _________ is used to assess to what extent the approximation of continuity can be made.
• The force of attraction of the Earth on a body is called which quantity?
• In a perfectly elastic collision, the coefficient of restitution has a value of
• Newton's second law is commonly expressed as which equation?
• A beam with more than one supports is called ______.
• The escape velocity from the earth's surface is
• An airtight box of weight P is suspended from a scale. A bird of weight W is placed on the floor and flies around at constant altitude without accelerating. What does the scale read?
• What assumption is used in the analysis of uniform flexible cable?
• Using a rectangular coordinate system, which theorem relates area moments about parallel axes?
• Which law states that a force applied to a support creates an equal and opposite reaction from the support?
• Collisions in which objects rebound with the same speed as they had prior to the collision are known as __________.
• Which quantity is measured in radians by the angular distance swept through by a line in the rotating body?
• It is the factor by which a mechanism multiplies the force put into it.
• __________ is finding a single force which shall be equal to two or more given forces when acting in given directions.
• If there is no friction, the coefficient of friction is zero.
• For a particle in equilibrium, the resultant force is?
• The number of independent degrees of freedom is:
• The radial distance from the axis to the line of action of the force is called what?
• A system of forces is __________ if the lines of action intersect at a point.
• For three forces acting on a particle in equilibrium, each is proportional to the sine of the angle between the other two. This is known as?
• Which of the following lists has the smallest rolling resistance coefficient?
• Which equilibrium type occurs when a small displacement does not change the potential energy and the body remains at the displaced position?
• Tangential acceleration changes which aspect of velocity?
• The coefficient of friction μ is equal to
• In simple harmonic motion, the total mechanical energy remains constant.
• The point at which the resultant ground reaction force can be considered to act is called
• A rigid-body motion in which all points remain in a fixed plane is called plane motion. Which option describes this motion?
• If a number of concurrent forces acting simultaneously on a particle are represented in magnitude and direction by the sides of a polygon taken in order, then the resultant of this system of forces is represented by the closing side of the polygon in the opposite in the opposite order. This statement is known as?
• In static equilibrium of a rigid body, what must be true about the resultant force and resultant moment?
• The time derivative of angular momentum is called
• Observed from an internal reference frame, the net force on a particle is proportional to the time rate of change of its linear momentum. This is Newton's ______ of motion.
• It is the geometry of motion.
• Which set of quantities describes motion using the impulse-momentum principle?
• A system in which all forces act along the same line of action is described as which type?
• Which term describes an axis passing through the centroid of a shape used in deriving area moments?
• Which statement correctly describes the linear momentum of a particle of mass m moving with velocity v?
• The radius of gyration is defined as the square root of the moment of inertia divided by the cross-sectional area.
• What causes hurricane flow to be counterclockwise in the Northern Hemisphere?
• In an elastic collision, the total momentum of the system is conserved.
• Each repetition of a vibratory motion is called a what?
• The linear momentum of a rigid body is defined as the sum of the linear momenta of its particles.
• The universal gravitational constant G depends on which of the following?
• The line joining the center of gravity and the center of rotation is called which axis?
• The physical quantity which produces angular acceleration is called
• Which principle states that the external effect of a force is the same for all points along its line of action?
• What is the science that describes and predicts the effect on bodies at rest or in motion by forces acting on it?
• A force system in which all forces lie in the same plane is called coplanar.
• Which type of collision results in a decrease of the total kinetic energy of the system after impact?
• Who is considered the father of modern engineering mechanics?
• The principle that the resultant remains unchanged when another system in equilibrium is added or removed is described by which law?
• Which vector has action not confined to a unique line in space?
• What keeps an Earth satellite moving in its orbit?
• In a temperature-entropy (TS) diagram, what does the area under the curve represent?
• The gravitational force constant has the units of which of the following?
• The rolling resistance coefficient of ordinary car tires on concrete is
• Centripetal acceleration changes which aspect of velocity?
• It is the rate of change of velocity
• Which of the following is an example of a contact force?
• When two surfaces come into contact, the forces exerted by one surface on the other are called
• Force acting on an object that acts on the volume of the object is a ______.
• Any object wholly or partly immersed in a fluid is buoyed up by a force equal to the weight of the fluid displaced. This is known as the ____________.
• Which force system produces a pure moment with no resultant force?
• What is the unit of mass moment of inertia?
• Two blocks start from the same height, one sliding down a smooth incline and the other in free fall. Which reaches the ground first?
• Which analysis method uses cutting through the truss to form a free-body diagram of a section to solve for unknown member forces?
• If the mass of one of two particles is double and the distance between them is doubled, the force of attraction between the two particles will
• If the coefficient of restitution is zero, the impact is ______.
• Which mechanical device transmits force along its length only by tension?
• Gravitational force of attraction F exists between two point masses, A and B, when they are separated by a fixed distance. After mass A is tripled and mass B is halved, the gravitational attraction between two masses is
• As a projectile moves under gravity near Earth's surface, its acceleration is
• The second moment of area about a given axis is known as the
• A rigid body free in space has how many degrees of freedom?
• The condition that the resultant of all forces acting on a particle is zero is called what?
• The moment of inertia of an area is defined by which equation?
• A roller support has how many reactions?
• The equations for one-dimensional motion with uniform accelerations are often referred to as
• Which type of collision results in deformation and energy loss?
• If the orbital radius triples, the orbital period increases by factor:
• The rate of change of the angular velocity with respect to time is
• The mathematical description for simple harmonic motion is which term?
• Which term describes the study of material deformations under loads, distinct from fracture or fluid flow?
• A force in a plane can be resolved into how many independent components?
• In a simple pendulum, which force primarily acts as the restoring force pulling the bob toward the lowest point?
• The standard gravitational parameter for Earth is approximately which value?
• A simple beam is defined as a beam supported at its ends with no moments at the supports.
• What refers to the branch of mathematics which deals with the dimensions of quantities?
• If the mass of a solid sphere about its diameter is doubled, while the radius remains the same, the new moment of inertia is which multiple of the original?
• In a central impact, the line of impact passes through the centers of mass of the colliding bodies.
• The acceleration-time plot integral yields which quantity?
• Which branch focuses on the geometry of motion without regard to forces?
• A structure with too much freedom that cannot carry a load is called a
• A link or cable support has how many reactions?
• The Newton is defined as the unit of force equal to
• The volume of any solid of revolution is the product of the generating area. Which proposition is this attributed to?
• The sum of moments about a point caused by multiple concurrent forces is equal to the moment of the resultant about the same point. This statement is known as?
• Which law states that a body at rest or moving with constant velocity remains so unless acted upon by a net external force?
• Which of the following is not a vector quantity?
• A rigid body motion in which all points move along circular paths with centers on a fixed straight line is called:
• Which set of quantities describes motion using the work-energy principle?
• A fluid at rest has no which type of stress?
• The maximum number of components that a single force may be resolved into is
• The statement that a net force causes acceleration in the direction of the resultant force, with acceleration proportional to the net force and inversely proportional to mass, is known as which law?
• A __________ is a vector field of all displacement vectors for all particles in the body.
• Which term defines a fluid that continues to flow regardless of the forces acting on it?
• The product of a scalar and a vector is a ______.
• Which branch analyzes how forces produce motion or accelerate bodies?
• If the radius of a solid sphere is halved, the moment of inertia about the same diameter becomes what fraction of the original?
• Determine the magnitude of the force vector F = 20i + 60j - 90k (N).
• A body with forces applied at only two points and no moments is known as what?
• What is usually used to move heavy loads by applying a force which is usually smaller than the weight of the load?
• In a truss, a member that carries no load under certain loading conditions is called what?
• The moment of a force couple about any point is the same.
• A type of force acting on a body caused by the friction between the body and the ground is called
• Which branch deals with the forces required to produce motion?
• To calculate for the force exerted on a charged particle by a magnetic field, _________ is used.
• The resulting force of a distributed load is always acting at:
• Which term describes the forces that determine how loads applied to a structure are distributed within the structure?
• Which mechanical device can only transmit a tensile force along its length?
• A truss consisting of coplanar members is called ______.
• Which fixed property determines a body's resistance to changes in motion?
• A property of fluids which is the force generated by a fluid in response to a velocity gradient.
• What refers to a negligible body when compared to the distances involved regarding its motion?
• It is defined as the motion of a rigid body in which a straight line passing through any two points of the body always remain parallel to its initial position.
• If the buoyancy of an object exceeds its weight, the object __________.
• The mass moment of inertia of a thin spherical shell about its diameter is which of the following expressions?
• Which condition indicates two vectors are perpendicular?
• When a body returns to its original equilibrium position after being displaced, the state that exists is called?
• It is the study that describes the motion of macroscopic objects.
• All forces are aligned along a single line of action. This arrangement is described as which type of force system?
• Which type of impact occurs when motion is not directed along the line of impact?
• The path of the translating body is curved, the motion becomes _____.
• Which expression represents Torricelli's equation of motion for final velocity in terms of initial velocity, acceleration, and displacement?
• A force that causes a change in mechanical energy around a closed path is called?
• It is the science which deals with bodies in motion or at rest with specific attention being directed primarily to the external effects of a force or a system.
• If the separation between two fixed-mass objects is increased to three times its original distance, how does the gravitational force between them compare to the original force?
• When hit, the velocity of a 0.2 kg baseball changes from +25 m/s to -25 m/s. What is the magnitude of the impulse delivered by the bat to the ball?
• A method of applying mechanics that assumes all objects are continuous.
• Which branch refers to the study of rigid body motion without reference to the force that causes the motion?
• Material derivative is also known as __________.
• Which branch studies the equilibrium of rigid bodies acted upon by balanced forces?
• A built-in, fixed support has how many reactions and moment?
• If an area has one line of symmetry, where will its centroid lie?
• In SUVAT notation, which quantity is denoted by s?
• A stable equilibrium is defined by dV/dA = 0 and d2V/dA2 > 0. Which of the following best describes this state?
• The axis about which rotation occurs is called which axis?
• Material derivative is also known as which of the following?
• Kinetic friction is independent of the contact area between surfaces.
• A 0.3 kg ball experiences an impulse of 6 N*s. What is the resulting change in velocity?
• _________ is the study of the physics of continuous solids with a defined rest shape.
• During a collision between two objects, which statement is always true?
• Assume that an object has no unbalanced force acting on it. Which statement about the object is true?
• An object rests on an inclined plane. As the angle increases, the force needed to prevent the object from sliding down the incline increases.
• It is defined as that which changes, or tends to change, the state of motion of a body.
• The velocity-time plot integral yields which physical quantity?
• In a collision where the total kinetic energy before and after impact remains the same, what type of collision is it?
• In a rectangular coordinate system, the equilibrium equations can be represented by three scalar equations. What is this form called?
• What refers to a pair of equal, opposite and parallel forces?
• If the action lines of all the forces in a system are parallel and not all lie in the same plane, the forces form a system described as
• Which area of mechanics focuses on predicting structural failure due to cracks and flaws?
• A truss consisting of non-coplanar members is called ______.
• The resultant of two forces is the diagonal formed on two vectors of those forces according to which law?
• Which law states that kinetic friction is independent of sliding velocity?
• If two forces acting simultaneously on a particle can be represented by the two sides of a triangle taken in order that the third side represents the resultant in the opposite order. This statement is known as?
• What velocity is normally referred to as the derivative of position vector with respect to time?
• The second moment of area is also known as the moment of inertia. Which statement is true?
• In truss analysis, members that must be removed to avoid an insufficient number of equations are known as
• A component formed by combining two wedges obtained from the opening of helix threads is called a
• Which quantity is most directly related to a cross-section's resistance to twisting?
• The _________ is described as the primary force from which gravity, electromagnetic and electrostatic forces manifest.
• The maximum displacement of a vibrating body from its equilibrium position is called what?
• When a body moves away from its displaced state after being moved from its original equilibrium position, the state which exists is called
• The lines of action of all forces are parallel and lie in the same plane. This system is described as which?
• The steepest inclination to which the block will be in equilibrium on an inclined plane is called _____.
• It is sometimes called the vector product.
• Which product yields a vector perpendicular to both vectors?
• In which structural members are bending actions observed?
• What term denotes the magnitude of a force?
• The moment of inertia of a triangle with respect to the line passing through its centroid is how many times its moment of inertia with respect to its base.
• Which of the following forces has infinite range?
• In a perfectly inelastic collision, which quantity is conserved?
• The expression (1/2) m v^2 represents which physical quantity?
• According to the listed propositions, which proposition states that the surface area equals the length of a semicircle multiplied by the distance travelled by its centroid?
• Which term describes the frictional force between a body and the ground?
• A specific amount of matter whose particles remain at fixed distances from each other describes what type of body?
• When a mass rotates in a plane about a fixed point, its angular momentum is directed along:
• Expressing a given force as the vector sum of two coplanar forces illustrates which concept?
• The coefficient of friction μ is which of the following?
• The value of Gforce is equal to which of the following?
• Surface forces
• In an experiment throwing balls straight up with varying initial velocities, which quantity will have the same value in all trials?
• The condition existing when the impressed frequency is equal to the natural frequency is known as_______.
• Which friction type resists the initiation of sliding between two surfaces in contact?
• Center of gravity for a two dimensional body is the point at which the entire _____ acts regardless of the orientation of the body.
• Which of the following is not a vector quantity?
• The angular momentum of a rotating object can be calculated by the formula
• Which term describes a sketch used to analyze the forces acting on a body?
• Which of the following describes the relation between the angle between the normal force and the resultant force and the angle of friction?
• Tendency of a force to cause rotation about a line or axis is called ______.
• Which Amontons law states that friction is independent of the apparent area of contact?
• The principle that adds inertial force to the static equilibrium equation so that dynamic problems can be analyzed as static ones is known as
• In simple harmonic motion, where is the velocity at its maximum?
• The rotating axes are called the normal and tangential axes since they are respectively normal and tangent to the path of the center of gravity.
• If a 10-kg object experiences a 20-N force for 0.05 seconds, what is the momentum change?
• Which frame of reference is required for the standard form of Newtonian mechanics?
• Which operation yields a scalar from two vectors?
• The Coriolis force arises when observing motion from which frame of reference?
• Impulse is equal to ________.
• In which structural system is the internal force in a bar directed along the axis of the bars?
• With μ = 0.35 for a 400 g object on a horizontal floor, a 3 N pull will cause the object to
• If the distance between two masses is tripled, the gravitational force becomes
• A uniform circular motion can be considered as a combination of ______.
• The maximum number of components that a single force may be resolved into is
• Which method uses the free-body diagram of joints to determine member forces in a truss?
• In the expression Sp2dA, what does p represent?
• The unit of force, the Newton, is equivalent to which of the following?
• Which quantity describes how a cross-sectional area is distributed about an axis and largely determines bending stiffness?
• Which statement describes the principle of transmissibility?
• In a uniform gravitational field, the center of gravity, centroid, and center of mass coincide.
• The weight is the force that results from the attraction between a body's mass and the Earth.
• Which product distributes over vector addition?
• Which term describes the friction that occurs when an object is moving across a surface?
• Rolling resistance is the resistance that occurs when a round object such as a ball or a tire rolls on a flat surface.
• At the top of the trajectory of a vertical throw, what is the acceleration?
• A fixed support provides a moment reaction along with translational reactions.
• What is the minimum number of unequal forces whose vector sum can equal zero?
• If the action lines are not in the same plane, are not parallel, and do not intersect at a common point, the system is described as
• As the angle between two concurrent forces decreases from 180 deg, their resultant
• An object has weight W at Earth's surface. At a distance equal to three times Earth’s radius from the center of the Earth, the weight of the object will be:
• What is the action of one body on another that changes or tends to change the motion of the body acted on?
• The second moment of area is used to determine which of the following properties? It can also be called moment of inertia.
• Which statement best explains why ice is slippery?
• A 5-kg object experiences a momentum change of 2 N*s. What is the resulting change in velocity?
• Refers to the state just before surfaces start to slip.
• Second moment of area is the product of:
• In an elliptical orbit around the Earth, the orbital speed is greatest at which location?
• One horsepower is defined as 550 ft-lb of work per second.
• The resultant of two concurrent forces is minimum when the angle between them is
• The line integral ∫ F · ds along a path defines which physical quantity?
• When a body has more supports than are necessary to maintain equilibrium, the body is said to be _____.
• When is an equation considered dimensionally homogeneous?
• If two force lines intersect at a single point, the forces are described as
• On an inclined plane, the angle θ at which impending slip occurs satisfies which relation in terms of μ_s?
• Which quantity refers to the sense and slope of angles with respect to reference axes?
• Which statement represents Newton's second law of motion?
• Which of the following statements is false?
• Two forces acting on a particle may be replaced by a single resultant obtained by drawing the diagonal of a parallelogram whose sides equal the given forces. This statement is known as?
• The product of a scalar and a vector results in which type?
• The algebraic sum of the moments of the forces about any axis perpendicular to the plane of a force couple equals which quantity?
• If a ball is moving in a circle on a string and its speed is doubled while the radius stays the same, what happens to the required centripetal force?
• In an elastic collision, which quantities are conserved?
• Which law states that the resultant of two vectors can be found either by placing the vectors head to tail (triangle method) or by forming a parallelogram?
• The curve of a hanging chain, known as a catenary, is described by which type of curve?
• Which of the following statements about friction is FALSE?
• Which branch deals with bodies acted upon by an unbalanced system of forces causing acceleration?
• An elevator containing a man weighing 800 N is rising at a constant speed. The force exerted by the man on the floor of the elevator is
• The work of a force on a rigid body is calculated the same as for a particle. Which quantity represents this work?
• What is the determination of the resultant of three or more concurrent forces that are not collinear, assuming they are coplanar called?
• If the distance between two fixed masses increases by a factor of 3, the gravitational force becomes:
• The state just before two surfaces begin to slip relative to each other is known as
• A three-force member is in equilibrium when the forces are concurrent or parallel.
• The upward force on an object produced by the surrounding fluid in which it is fully or partially immersed is called
• Neutral equilibrium occurs when the first derivative of potential with respect to displacement is zero and the second derivative is also zero. This state is called
• The frictional forces that can result when two surfaces are sliding to each other are proportional to the normal force
• Three or more non-parallel forces or vectors in equilibrium they must be concurrent.
• A three-force member is in equilibrium only if the forces are concurrent or parallel.
• If the force is moved in the direction parallel to the direction of the force, the moment exerted by the force is
• Pappus' theorem for volume asserts that the volume of a solid of revolution equals the product of the generating area and what distance?
• The area under an a-t curve represents the change in ______.
• Which theorem relates the moment of inertia about any axis to that about a parallel axis through the centroid?
• For a planet moving around the sun, which quantity remains constant under a central gravitational force?
• It is an experimental method for visualizing and analyzing fluid flow.
• The motion of translating body moving in a straight line is called _______.
• In a perfectly inelastic collision, which quantity is conserved?
• What is the mathematical property of a cross-section that concerns the distribution of area about a reference axis called?
• The buoyant force on a fully or partially submerged body acts in which direction?
• It is the study on how fluids react to forces.
• The coefficient of friction μ represents the ratio between which two quantities?
• The condition of equilibrium or motion of a rigid body remains unchanged if a force acting at a given point of the rigid body is replaced by a force of same magnitude and direction, but acting at a different point provided that the two forces have the same line of action. This statement is known as?
• The parallelogram law is used to determine which quantity when combining two forces?
• Which operation yields a vector quantity when applied to two vectors?
• The line perpendicular to the N axis through the center of rotation is called which axis?
• A convenient means of representing physical quantities that have magnitude and direction.
• Which expression defines the tangential component of acceleration?
• Which term is used for rotation about the center of gravity of a weightless figure such as a line, an area or a volume?
• The stability of equilibrium defined by the second derivative of the potential energy with respect to displacement being zero is called what?
• In simple harmonic motion, the restoring force is proportional to the displacement and directed toward equilibrium.
• The moment of inertia about a given axis parallel to the centroidal axis equals the centroidal moment of inertia plus the product of the area and the square of the distance between the axes.
• Which statement correctly describes centripetal force in circular motion?
• A set of forces lying in the same plane is described as which term?
• Which of the following is not a scalar quantity?
• What term describes the result when a body is acted upon by a force causing shape change?
• A hanging chain is described by which mathematical form?
• In a free-body diagram, if load is transmitted directly from each member to the opposite member without interaction, this situation is referred to as which concept?
• Which factors affect the magnitude of rolling resistance generated by an object on a flat surface?
• The statement that forces are in equilibrium only when equal in magnitude, opposite in direction and collinear in action is an example of which concept?
• The line through the center of rotation perpendicular to the N axis is called which axis?
• Which method is used to obtain the magnitude and direction of the resultant of any two concurrent forces?
• For a two-force member, the forces act along the line connecting the two points of application.
• In an elastic collision, the total kinetic energy of the system remains unchanged.
• D'Alembert's principle converts a dynamic problem into a static form by introducing which quantity?
• An axis passing through the centroid of an area is known as a _________
• Forces whose lines of action are parallel and lie in the same plane are described as which system?
• What method of determining the bar force of a truss if only few members are required?
• Which set of equations describe momentum changes depending on external pressure and internal viscous forces?
• What is a concurrent force system?
• Which statement about gravitational acceleration near Earth's surface is correct?
• As a space ship from earth goes toward the moon, the force it exerts on the earth
• Which equation correctly relates displacement, initial velocity, acceleration, and time for one-dimensional motion with constant acceleration?
• The mass moment of inertia of a cylinder about its central axis along its length is best described as being
• It is the material's ability to resist twisting.
• What is a 'simple beam'?
• Which method is used to determine member forces by analyzing joints in a truss?
• Which device exerts a force along its line of action and is proportional to its extension?
• Which field analyzes fluids and their behavior under forces?
• A continuous beam is defined as a beam with more than two supports.
• The gravitational force between an electron and a proton 1 meter apart is which value?
• Which term describes a member with forces applied at three points and no external moments?
• If the orbital radius doubles, the orbital period changes by what factor?
• Which structural system has member forces primarily axial?
• Which of the following relationships between dynamic and static friction is correct?
• It is a point within an object from which the force of gravity appears to act.
• Which term is used to describe a mathematical expression that frequently appears in column formulas?
• A solid disk of mass M and radius R rotates about its central axis with angular velocity ω. Its rotational kinetic energy is which of the following expressions?
• Pappus' theorem for surface area states that the surface area of a solid of revolution equals which product?
• The moment of a force about a point P is equal to the sum of the moments of its components about P.
• If the cord length is doubled while the speed remains the same, how does the centripetal force change?
• An object with inertia but of negligible dimension is called what?
• Which vector addition method is described as being followed by the parallelogram law?
• The SI unit for polar moment of inertia is
• In static equilibrium, the maximum tangential force that can be applied before motion begins is called what?
• In an elastic collision, the total kinetic energy is conserved.
• Which term best describes motion along a straight line without rotation?
• When a single force can be replaced by two equal and opposite forces separated by a distance, the system is called a
• Which discipline assumes matter can be treated as a continuous medium for mechanical analysis?
• The resultant of two forces obtained as the diagonal of the parallelogram constructed on the force vectors is described by which law?
• A couple is composed of two forces that are
• A wagon is uniformly accelerating from rest. The net force acting on the wagon is
• What is the name of a structure formed by two-force members connected only by pins?
• Two perpendicular vectors are given in terms of their components by U equals Ux i - 4 j + 6 k and V equals 3 i + 2 j - 3 k. Determine the component Ux.
• The time required to complete one oscillation backward and forward is called the period of the motion.
• Under which condition is the tension in a rope the same on both sides of a pulley?
• Using the Moon's radius and mass, the Moon's surface gravity is approximately which value?
• A member that carries load only at its two ends and transmits force along its length is called a
• The normal component of acceleration is expressed by which formula?
• It is defined as the time rate of change of displacement.
• Continuum Mechanics is best described as a method of applying mechanics that assumes all objects are continuous.
• It is the application of fluid mechanics in engineering.
• Which statement correctly lists the units for the gravitational constant as given in the material?
• In a polar coordinate system, the length of the ray segment from the origin to a point is called what?
• The stability of equilibrium defined by dV/dA = 0 and d2V/dA2 < 0 is called
• The universal gravitational constant G depends on which of the following as described in the options?
• Which statement correctly identifies the angular momentum of a particle about a point?
• A member that carries forces at exactly two points and has no external moment is called what?
• The study of friction is called what?
• Which term is synonymous with the angle of lead used for a jack screw?
• Which method is used to check the results obtained from the resolution and composition methods?
• The SI unit of energy is which of the following?
• Which statement correctly describes a concurrent force system?
• Which term refers to the moment associated with a force, often found as a vector perpendicular to the plane of force and lever arm?
• Radius of gyration is defined as the square root of the moment of inertia divided by the area.
• A type of force acting on a body due to the acceleration of gravity.
• Which support has one moment?
• What is the intensity of the force called?
• Two forces whose lines of action lie in a plane are called
• What is the mass moment of inertia of a solid sphere about its diameter?
• If a block remains at rest on a horizontal plane with no applied tangential force, what is the frictional force?
• Which statement correctly describes kinetic friction?
• On an inclined plane, the angle of repose is defined as the steepest incline angle at which a resting block remains in equilibrium.
• The moment of a force about a point describes its tendency to rotate; this is called a
• The SI unit for angular velocity is
• The vector connecting the positions of a particle in the undeformed and deformed configuration is called the ________.
• The moment of force is zero when
• Is a sketch of a body completely isolated or free from all other bodies described as what?
• Which of the following collisions is an elastic collision?
• Which branch deals with the geometry of motion?
• The rolling resistance coefficient of railroad steel wheel on steel rail is
• Which Amontons law states that friction is directly proportional to the applied load?
• Which statement about kinetic energy and linear momentum is correct for a rigid body?
• Given the Moon's radius 1,730 km and mass 7.34 x 10^22 kg, the acceleration due to gravity on the Moon is approximately which value?
• Which principle is used to convert a dynamic problem into a static form by including inertia as an additional force?
• Which branch focuses on the deformation behavior of solids under applied stresses, often without considering crack or fluid effects?
• The study of bodies in equilibrium under the action of balanced forces is known as which branch of mechanics?
• If the mass of an object near the surface of the earth is increased from M to 3M, the acceleration of the object due to gravity will be
• In polar coordinates, the distance from the origin to a point is called what?
• The external effect of a force in a rigid body is the same for all points along its line of action due to which principle?
• Which statement describes a pure moment produced by a couple?
• Which experimental method visualizes and analyzes fluid flow by seeding the fluid with tracers?
• The centroid concept for a distributed load is used to locate the point where the equivalent single force acts.
• Which concept transfers the moment of inertia from its centroidal axis to another parallel axis?
• An analytical method of finding the resultant of concurrent forces is
• Which law states that the resultant of two forces is found by the parallelogram law?
• The angular momentum L equals I ω. If I = 0.25 kg·m^2 and ω = 8 rad/s, what is L?
• When the loading is distributed along the cable the cable is analyzed as.
• In static equilibrium of a rigid body, which statement is true?
• If the distance between two fixed masses increases by a factor of five, the gravitational force becomes:
• Which expression represents the parallel axis theorem for moment of inertia about a parallel axis at distance d from the centroidal axis?
• In a free-body diagram, what does each force or couple represent?
• Which quantity is defined as mass times velocity and is a vector?
• The kinetics of particles is derived from which law?
• Static friction compared to kinetic friction is
• In the simple pendulum model, what is assumed about the cord?
• It is the ratio of power output to power input.
• The equilibrant of the forces 10 N at 10° and 15 N at 100° is which of the following?
• Which vector has a unique point of application specified, thus occupying a particular position in space?
• Which vector requires maintaining a unique line in space along which the quantity acts?
• Which term describes finding a single force that is equivalent to two or more given forces acting in specified directions?
• Which type of collision preserves both momentum and kinetic energy?
• Which method uses free-body diagrams of sections of the truss to determine unknown forces?
• These equations state that changes in momentum of fluid particles depend only on the external pressure and internal viscous forces acting on the fluid.
• Tangential acceleration affects velocity magnitude, not direction. Which option best reflects this statement?
• The essential condition of equilibrium of a body is?
• Which of the following has the highest coefficient of static friction?
• It defines limits on how accurately the momentum and position of a single observable system can be known at once.
• Which statement describes the centroid concept for a distributed load?
• The quantity that describes how quickly velocity changes is called what?
• Which statement is true about kinetic friction in many practical cases?
• When a force is represented by a vector, the straight line collinear with the vector is called the ________.
• In a fluid at rest, which type of stress is zero?
• The SI unit of power is the watt.
• What quantity is defined as the rate of change of angular displacement?
• When a body is in contact with the ground, the force that is reflected back to the body is called
• A body with forces applied at exactly three points and no moments is known as what?
• Under this condition forces are transformed into a polygon.
• The action lines are in the same plane but are not parallel and do not intersect in a common point. This classification corresponds to which force system?
• Which of the following is an example of a Newtonian fluid?
• The Radius Of Gyration is the distance from the axis at which all the area can be concentrated to give the same moment of inertia.
• Which device exerts a restoring force proportional to its extension?
• Rectilinear translation is the motion of a body along a straight line with no rotation.
• Escape velocity from a planet is independent of the mass of the object. This statement is
• The tension in a cable is the same on both sides of a pulley. This occurs under which condition?
• Which statement about centripetal force is true?
• The process of replacing a force system by its resultant is
• The impulse delivered to a system equals the change in which quantity?
• The vector field of displacement for all particles in the body is called what?
• Which term is defined as a dimensionless quantity representing the resistance to rolling?
• According to Kepler's third law, if the semi-major axis of an orbit doubles, by what factor does the orbital period increase?
• Which of the following ranges corresponds to ordinary car tires on concrete?
• Which theorem is used in locating the centroid of the semicircular arc?
• It is defined as the integral of force with respect to time.
• It is an equation used to find the final velocity of an object moving with a constant acceleration without having a known time interval.
• It is also known as quantity of motion.
• Which term describes quantities that have magnitude and require multiple directional components, typically represented by tensors?
• What term describes the contact resistance exerted by one body upon a second when the second moves or tends to move past the first?
• A couple consists of two forces equal, opposite, and on different lines
• If an object on an inclined plane with angle θ, the component of weight parallel to incline is __________.
• __________ is the time rate at which work is done on a body.
• Which quantity is not among those that describe motion using Newton's laws and d'Alembert's principle?
• If forces or vectors are in equilibrium then it must satisfy the three static equations.
• A rock of weight 6 N displaces water weighing 2 N. Determine the tension in the supporting string.
• Which type of impact occurs when the centers of mass are not located on the line of impact?
• The tuning effect on a body is dependent on which of the following?
• The rolling resistance coefficient is a dimensionless quantity also known as
• The standard gravitational parameter for Earth is approximately which value?
• A solid iron sphere A rolls down an inclined plane, while an identical hollow sphere B slides down the plane in a frictionless manner. At the bottom of the inclined plane, the total kinetic energy of sphere A is:
• If the mass of one body in a two-body gravitational system is doubled, how does the gravitational force between them change?
• The period is the time required for one complete cycle.
• A system of forces acting on a body which has no resultant is described as which of the following?
• Which principle governs the motion of a rigid body in classical mechanics?
• Which type of member in a truss cannot carry load under certain conditions?
• Forces and couples that arise from interactions within the same object do not appear on the free-body diagram of the entire object. Which concept is described by this statement?
• Which statement is correct about static and kinetic friction?
• Which term is defined as the time rate of change of any property of a continuum for a specified group of particles of the moving continuum body?
• For a given coefficient of friction μ and a normal force N, the friction force changes as N changes in what way?
• When several forces act in a given situation, they are collectively referred to as which?
• A system of two forces is ___________ if the lines of action lie in a plane.
• Which field studies deformations typically in the elastic range?
• It is simply a vector whose magnitude is 1.
• A man wants to move a block 3 m by 3 m weighing 80 kg with a coefficient of friction 0.27. Which method should be used?
• As altitude increases, the speed required for a stable circular orbit around Earth tends to:
• For a single particle of mass m moving with velocity v, linear momentum is equal to
• Which force has zero work done around any closed path?
• As the distance of a satellite from the Earth's surface increases, the time to complete one revolution around the Earth:
• The area under a v-t curve represents the change in ______
• The gravity in the Moon is about
• A car starts from rest and accelerates at 3 m/s^2 over a displacement of 20 m. What is its final velocity? (Use v^2 = v0^2 + 2 a Δx)
• A pictorial representation in solving a force system is called
• When a body undergoes an acceleration
• Which principle states that adding or removing a separate equilibrium system does not alter the resultant of a system of forces?
• When a planet moves around the sun
• Which operation is used to break a vector into its components along perpendicular axes?
• The path of a satellite orbiting the Earth is best described as:
• A rock of weight 10 N suspended by a string is lowered into water, displacing water of weight 3 N. Determine the tension in the string.
• Which principle states that every action has an equal and opposite reaction?
• Which expression correctly gives the number of independent degrees of freedom in a constrained system?