A boy weighing 60 kg climbs a rope to a height of 10 m in 20 seconds. What is the power expended by the boy? Assume g = 10 m/s2.
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0
Answer:
Here, m=60kg, height h=10m
Work done W= change in potential energy =mgh−0=mgh=60×10×10=6000J=6kJ
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2
Answer:
Explanation:
Work = F *distance = mg *H = 60*10*10 =6000J
Power ,p = w/t =6000/20
= 300watt
Power expended by boy is 300watt
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