Physics
State two factors on which the potential energy of a body at a certain height above the ground depends.
Answer
The potential energy of a body at a certain height above the ground depends on the following factors:
- The mass of the body — Greater the mass of the body, greater is the potential energy of the body.
- Its height above the ground — More the height of the body above the ground, more is the potential energy.
Related Questions
Name the type of energy (kinetic or potential) possessed by the following:
(a) A moving cricket ball.
(b) A stone at rest on the top of a building.
(c) A compressed spring.
(d) A moving bus.
(e) A bullet fired from a gun.
(f) Water flowing in a river.
(g) A stretched rubber band.
State the energy changes in the following while in use:
(a) An electric bulb
(b) An electric oven
(c) A loudspeaker
(d) A microphone
(e) An electric motor
(f) A wind mill
Two bodies A and B of masses 10 kg and 20 kg respectively are at the same height above the ground. Which of the two has greater potential energy?
A body of mass m is moved from ground to a height h. If force of gravity on mass of 1 kg is g newton, find:
(a) the force needed to lift the body,
(b) the work done in lifting the body and
(c) the potential energy stored in the body.