Question

The amount of work done by a man in pressing a rigid wall with a force of
400N-​

Answer 1

Answer:

work done will be zero because force is acting perpendicular

Answer 2

Answer:

workdone = force * Displacement

here force = 400N

since the wall is rigid that means it can not be move

therefore displacement= 0

workdone= 400*0= 0

workdone is 0

Explanation:

hope it helps you