Question

If there is a definite force and a definite displacement of the object, does it mean that work is definitely done by the force?

Answer 1

1. Work done is defined as the dot product of applied force $\left(F\right)$ and displacement of the object $\left(s\right)$ due to applied force in the direction in which the force is acting.
2. So, Work done $=F.s\cos \theta$ [$\theta =$ angle between force and displacement.]
3. Hence from the formula of work, it is clear that work done depends on force and displacement and the angle between force and displacement.
4. If there is a definite force and there is a definite displacement of the object the work done may or may not be definite because the work done depends on the angle between force and displacement.