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June 30, 2015

Homework Help: art

Posted by lawless on Sunday, October 25, 2009 at 3:44pm.

A piano whose mass is 106 kg is being lifted at a steady speed from ground level straight up to an apartment 12.4m above the ground. The crane that is doing the lifting produces a steady power of 565W. How much time does it take to lift the piano?

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