Question

In certain cases, even when force is applied work is not done. Explain with the help
of an example.
4​

Answer 1

Explanation:

Let us consider some cases where work is not done:

Work is zero if applied force is zero (W=0 if F=0): If a block is moving on a smooth horizontal surface (frictionless), no work will be done. Note that the block may have large displacement but no work gets done. ... Work done is zero when displacement is zero.