a body of mass 50 kg runs up a staircase is 15 cm find the power of the boy g=10 m.s 

Dear Student

Your question is incomplete as to find Power we need time in which work is done.
Power = Work Done /time taken

Power = mgh /t

You can substiute the values and get answer.

Regards

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Isn't there time???
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What are you looking for?