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March 26, 2017

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a 300kg piano is being lifted at a steady speed from ground level straight up to an apartment 10.0m above ground. The crane that is doing the lifting produces a steady power of 400 W. How much time does it take to lift the piano?

  • Physics - ,

    Time required (s) = (Work required, J)/(Power, W)

    The amount of work required is
    W= M g *(10 meters) = 300*9.8*10 Joules

    Finish the calculation

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