Question

Work done on a body depends

• A. only on the magnitude of external force applied on the body.
• B. only on the displacement of the body
• C. on both the displacement of the body and the component of external force acting in the direction of its displacement.
• D. None of the above.

Answer 1

Answer: (C)

on both the displacement of the body and the component of external force acting in the direction of its displacement.

Work done is defined as the product of force and displacement.

Mathematically, Work = F . s Cos$\theta$

where F = force, s = displacement and $\theta$ is the displacement angle

Hence, work done depends on both displacement of the body and the component of external force acting in the direction of its displacement.