What is meant by the gravitational potential energy ? Derive an expression for it for a body placed at a height above the ground.
Two bodies of same masses are placed at a height h and 2h.
Compare their gravitational potential energy.
The gravitational potential energy of a body of mass 'm' at the earth's surface āmgRe. Its gravitational potential energy at a height Re from the earth's surface will be (Here Re is the radius of the earth)