Question

explain the work done by the person in the following conditions:
(1) when he is standing at a place holding a suitcase in his hand?
(2) when he is moving holding a suitcase in his hand?

Answer 1

1 - he has not done any work
2- also not done any work

Answer 2

In the first case the work done will be zero and in the second case, there will be some positive work done