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Dafna1 [17]
4 years ago
8

Two movers use a rope system to lift a box to a third-story apartment. they do 1,200 j of work on the rope system, and the rope

system does 1,020 j of work on the box. what is the efficiency of the rope system?
Physics
2 answers:
shepuryov [24]4 years ago
8 0
Efficiency = energy output / energy input
Sladkaya [172]4 years ago
8 0

Efficiency = (1020 J / 1200 J) = 85%

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Answer:

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