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?

Answer 1

Although a piano requires considerable art to play it well; its weight is really not 'artistic'.

Answer 2

Power=weight*height/time

time=weight*height/power.

time will be in seconds.