Question

How much work is done by a man who tries to push the wall of a house but fails

to do so?​

Answer 1

In this case the work done (mechanical work ) by the man will be zero , as the work done is define as W = F x S , and in this case the displacement (S) is zero .

Answer 2

Answer: No work is done.

Explanation: No work is done because work is said to be done only when the force applied causes a displacement in the direction of force. In this case, there is no displacement and hence, no work is done.