a set of pulleys is used to lift a piano weighing 1000 newtons the piano is lifted 3meters in 60seconds.power?

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a set of pulleys is used to lift a piano weighing 1000 newtons the piano is lifted 3meters in 60seconds.power?

2007-03-14 10:25:07 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Physics

2 answers

Work (or energy) = Newton-meters (multiply newtons and meters together)

Power = energy / time (divide work by time)

1000 * 3 / 60 Nm/s (or Joules)

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2007-03-14 10:29:53 · answer #1 · answered by tlbs101 7 · 0⤊ 0⤋

Power is the rate at which work is done that is
P = Work done/time
Work = force * distance
Work = 1000*3= 3000Joules
Power=3000/60=50watts

2007-03-14 10:39:16 · answer #2 · answered by Samuel_007 2 · 0⤊ 0⤋