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Question:

a mass of 20kg is to be raised by a hoist 2m in 30 seconds. assuming no losses, the power required to raise?

a mass of 20kg is to be raised by a hoist 2m in 30 seconds. assuming no losses, the power required to raise is ??

Answer:

work=energy=20(9.8)x2=392 jouls Power=392/30=13.067 watts. God bless you.

power= (40/3) joule per sec. or 13.33joule per sec.

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