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Potential Energy

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Question

Calculate the potential energy of a body of mass 5 kg at height of 2 m from the ground

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Solution

potential energy=P.E
PE = mgh
where m is mass of the body , g is acceleration due to gravity , h is the height above the ground.
• For 5Kg body :
PE at 2m height above the ground is given by = 5×9.8×2=98J

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