A boy weighing 50 kg climbs up a vertical height of 10 km.(given,g=10ms-2) (i) Calculate the amount of work done by him.
(ii) How much potential energy does he gain?
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Answered by
2
Answer:
Given:
Weight of boy, m = 50kg
Height, h = 100m
Since the boy does not move anything with his force, therefore, the work done by him is zero.
Work done on the boy = Gain in potential energy.
Potential Energy (P.E) = mgh
⇒50 * 9.8 * 100
⇒49 KJ.
Answered by
2
Answer:
Potential Energy ( P. E) = mgh
= 50* 9.8*100
= 49 kj
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