from the ground floor a man comes up to the fourth floor of a building using a staircase another person comes up to the same floor using the elevator. neglect friction and compare work done in the two cases

Open in App

Solution

The work done is equal to the change in potential energy. The final potential energy is gravitational potential energy (= mgh). Now, as the height from ground is same, the difference in potential energy will come only due to the difference in mass of the persons. So, the potential energy will be the ratio of the masses of the two persons.

Suggest Corrections

Similar questions

The elevator starts from the ground floor and goes up to the fourth floor. It drops a person and comes down to the first floor. The displacements in both these cases are:

The elevator starts from the ground floor and goes up to the 4th floor it drops a person and comes down to the first floor then displacement in both the cases are?

Q. A man works on the

10 t h

floor of a building. He always uses the elevator to go down at the end of the day. He takes the elevator to the

7 t h

floor every morning and walks up the stairs for the remaining floors. Why?

Q. A heavy block from the ground can easily be lifted up to a higher floor of a building using:

Q. There are 8 floors on a building including the ground floor. If 4 persons enter the lift in the ground floor the number of ways in which they get down the lift if no two persons come out of the lift at the same floor is

Join BYJU'S Learning Program