a girl of mass 40 kg runs up stairs of 30 steps in 10 s. if the height of each step is 0.1, find the power developed by her. take g = 10 ms-2 please guys need your help !!!
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Explanation:
Given, mass of the boy, m=40kg ;
total height gained, h=50×10cm
=500cm=5m
time taken to climb, t=5s
Work done by the boy,
W=mgh=(40)(10)(5)=2000J
Power developed, P=tW=52000=400W
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