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A man whose mass is 75 kg walks up 10steps, each 20 cm high, in 5s, Find thepower he develops. Take g 10 ms 2. |
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Answer» Power=energy/timeEnergy(j) = work done (j)Hence , power = workdone / timeWorkdone =force[the weight-mg] X distanceWorkdone = 75(10)x(20x10)=150000Thus , power = 150000/5s=30000watts |
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