expression of potential energy
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Gravitational potential energy (U)=mass *Height*acceleration due to gravity=mgh
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Answer:Let us consider a body of mass (m) lying on the surface at rest where height is zero but when we apply force to lift it in upward direction it displace to height (h) from it's position on the surface
Force F is required to lift the body in upward direction
Weight W = mass gravitational acceleration
W =mg------- (1)
Work= F×s(displacement)
Work=P.E=mg×h
: : P.E =mgh
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