An object of mass 10kg lifted to a height of 20 m in 2 seconds. Find the power exerted by the on the object?
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Answered by
2
Power = Work/Time
Work= F.s
= mgh
= 10*10*20 = 2000J
Power = 2000/2 = 1000W
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0
since
m = 10kg
h = 20m
t = 2 sec
w = mgh
w= 10(10)(20) (g = 10)
w = 2000j
so
p = w / t
p = 2000/ 2
p = 1000watt
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