Derive an expression for Potential energy …
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Meghna Thapar 6 years, 1 month ago
Suppose a body of mass m is raised to a height h above the surface of the earth. The force acting on the body is the gravitational pull of the earth m x g which acts in the downward direction. To lift a body above the surface of the earth, we have to do work against this force of gravity.
Work done = Force x Distance
So, W = m x g x h
This work gets stored up in the body as potential energy.
Thus, potential energy = m x g x h
Where m is the mass of the body, g is acceleration due to gravity; h is the height of the body above the reference point.
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