what is potential energy and its expression
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Potential energy is energy an object has because of its position relative to some other object. ... For the gravitational force the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters.
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Potential energy is the work done to take a body to a certain height.
for a body with mass m,h is the distance to which it is raised and g is the gravitational force acting on the body then .then work done W is given as :W=force * displacement.
W=mg *h. W=mgh.
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