a boy weighing 50kg climbs up a vertical height of 30m by staircase,then what is the energy at that height. Take g=9.8m/s^2
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i cant understand
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Now, potential energy of a body kept at the same height is equal to the amount of work done against gravity in moving the body to that position. Therefore, the potential energy of the boy at that height is 49 KJ .
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