Question

In the following cases ,state whether work will be the escape velocity for that planet??​

Answer 1

in first case and the second case work is not done because

Answer 2

no work is done in both the cases.

1) w= force * displacement

no force or displacement is applied in reading

2) again, earth is revolving and coming back to its initial position because of which displacement= 0

here again, no work is done.