Asked by Peter

A 3.60 102-kg piano is being lifted at a steady speed from ground level straight up to an apartment 18.0 m above the ground. The crane that is doing the lifting produces a steady power of 4.00 102 W. How much time does it take to lift the piano?
Answered by drwls
Use an energy method. Power x time = Potential energy change

We will be glad to critique your work
Answered by Anonymous
1.10
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