A mass of 10 kg is being taken up through 20 stairs each of height 20 cm
and width 15 cm. What is the work done? Take g=10m/s².
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Answer:
Total work done by man in covering 20 steps =mgh=80×10×0.2×20=3200J
So, Power(P) =
Time taken
Work done
=
10
3200
=320Watt
Explanation:
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