Question

a man comes up to the third floor of a building using a staircase starting from the ground floor. another man uses an elevator to reach the third floor from the ground floor neglecting friction compare the work done in the two cases​

Answer 1

Answer:

Both will have equal work done.

When first person moves upward with stairs , his own energy is converted into the mechanical energy to lift him up.

As for the second , electric energy in elevator is converted into mechanical energy to lift him up.

Energy converted in both the cases is same, thus the work done will be equal.

I hope it will help you.