Answer :
Gravitational potential energy are solved using the formula, PE = m* g* h.
The gravitational potential energy of the object is defined as the energy possessed by the object that rose to a certain height against gravity. We shall formulate gravitational energy with the following example.
Consider, the object of mass m, placed at a height h from the ground.
As we know, the force required to raise the object equals to m* g, it is the object's weight.
As the object is raised against the force of gravity, some amount of work is done on it. Work done on the object = Force * displacement
So, W = m* g* h
Thus, the expression of gravitational potential energy is PE = m* g* h.
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