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?

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?

• A. Principle of Transmissibility
• B. Parallelogram Law
• C. Varignon's Theorem
• D. Triangle Law of Forces

Answer: (D)

Vector addition of forces is treated geometrically by the triangle law. When two forces act at a point, you can represent them as two sides of a triangle laid end to start in the order they act. The line that closes the triangle—the third side—represents the resultant, but its direction is opposite to the way you traverse the two given forces. This is a direct way to visualize F1 + F2 as the closing side of the triangle. The triangle law is the precise geometric rule used for combining two concurrent forces, and it parallels the parallelogram approach (which uses a different drawing) while others in the list refer to different concepts entirely.

Vector addition of forces is treated geometrically by the triangle law. When two forces act at a point, you can represent them as two sides of a triangle laid end to start in the order they act. The line that closes the triangle—the third side—represents the resultant, but its direction is opposite to the way you traverse the two given forces. This is a direct way to visualize F1 + F2 as the closing side of the triangle. The triangle law is the precise geometric rule used for combining two concurrent forces, and it parallels the parallelogram approach (which uses a different drawing) while others in the list refer to different concepts entirely.