Question

A coolie is standing on a railway platform with a load of 30 Kg on his head for 30 minutes, but still according to the logics of science his work done is said to be zero. Can you opt out the correct reason?

Answer 1

Explanation:

workdone = force × displacement

As the coolie is standing , the displacement is zero..

so, workdone = 30 × 0 = 0