Question

if a person lift a bag at some height and he is at rest how much work is done by him ​

Answer 1

Answer:

I think the answer should be zero.

Explanation:

Beacause work is said to be done when force is applied in a particular direction and displacement occurs.In this case there is no displacement as the person is not moving beacuse he is at rest.

Answer 2

Answer: Zero

Explanation:

We know Work done is defined as product of force and displacement covered by that force . In this case the work done by the man is 0 . However work done by gravitational firce is not 0 .