What is the capacity of a boy weighing 40 kg if he climbs a roof 600 cm high in 12 seconds?
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Answer:
(i)
Force of gravity acting on the boy = mg
= 40 * 10
= 400 N
(ii)
Work is done by him = mgh
= 40 * 10 * 0.08
= 32 J
(iii)
Power = Work / Time
= 32 / 5
= 6.4 Watt
Explanation:
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Answer:
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