Question

define gravitational potential energy derive expression for it

Answer 1

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The energy of a body due to its position above the ground is called gravitational potential energy .


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Answer 2

Answer:

      Gravitational Potential Energy

⇒ The energy possessed by a body due to its change of positions is called Gravitational Potential Energy.

Example: A stone at a height has a gravitational potential energy due to its raised position.

Additional Information:

Gravitational potential energy can also be described as :

The potential energy possessed by a body due to its position relative to the centre of earth is called its gravitational potential energy.

Let a body m be lifted from a ground to the vertical height h.

The least upward force F  required to lift the body must be equal to the force of gravity.

W = Force of Gravity(MG) ₓ Displacement (h)

So, W = mgh

This work is stored in the body when it is at a height h in the form of its gravitational potential energy.

U = mgh