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physics help!!!?

A person uses a pulley system to raise a 23.1kgblock to a height of 18m.if a force of 124N is exerted on the rope is pulled 34.2 m. find the efficiency of the system

2007-03-22 14:18:55 · 1 answers · asked by Adam P 1 in Science & Mathematics ➔ Physics

1 answers

η = (work out)/(work in) = 23.1g*18/(124*34.2) = .0534 = 5.34%

2007-03-22 14:26:27 · answer #1 · answered by Steve 7 · 1⤊ 0⤋

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