Question

A person standing with heavy bag on his head now the work is done?

Answer 1

The work done will be zero as their is no displacement (the person is standing still)

And we know
Work done =( force)(Dispalcement )

Work done = 0

Answer 2

your answer

work done will be zero as the direction of load is perpendicular to direction of ground so cos 90° =0 hence work done =0

hope helps