Question

what Will be the amount of work done by a man in pressing a rigid wall with a Force of 400N​

Answer 1

Answer:

Of which standerd it is ????

Answer 2

work done will be zero as no displacement takes place. As displacement will be zero

$fs \cos( \alpha ) = f \times 0 \times \cos( \alpha ) = 0$

Hope it helps.have a great day