Question

Give an example of a situation where work done is zero.

Answer 1

1. A person pushing a wall is an example of zero work done.
2. He is applying the force but displacement is zero as the wall will not move at all.
3. As $\mathrm{Work}=\mathrm{Force}\times \mathrm{displacement}$ .
4. So $\mathrm{Work}=0$.
5. Therefore, a person pushing a wall will perform no work.