Questions
An electric motor creates a tension of 4500 newton in a hoisting cable and reels it in at the rate of 2 m/s, What is the power of this motor?
a
25 kW
b
9 kw
c
225 watt
d
9000 hP
detailed solution
Correct option is B
Power=F·v=4500×2 W=9000 W=9 kW.Talk to our academic expert!
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If force F is applied on a body and it moves with the velocity V, the power will be :
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