How long will it take a 2350 W motor to lift a 330 kg piano to a six story window locate 16.0 m a above ground? Express your answer in seconds.
Solution)
Given,
Power, P=2350 W
Mass, m=330 kg
Height, h=16 m
We know,
Power, P= Force* height/time
Whete, Force, F=mg
So, time, T=mgh/P
Substitute values,
T=(330*9.8*16)/2350= 22.02 sec (Ans)
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