Question

15.5 Derive an expression for the gravitational potential energy of a body of mass 'm' kept
15.6 Fig. 24 shows how two objects having the same mass are raised to a certain height via two different
paths. Will the amount of potential energy possessed by them be the same? Justify your answer.
15.7 A man takes a spiral stairway from the ground to go
to the roof of a building. Another man uses a ladder
against the wall of the building to reach its roof. Will
they both possess the same amount of potential
energy? Justify your answer.​

Answer 1

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Answer 2

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