jdshjkaren jdshjkaren

24-03-2017
Physics

contestada

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?

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Аноним Аноним

24-03-2017

efficiency = energy output / energy input

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chrislud010 chrislud010

06-02-2019

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

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