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Physics, 03.07.2019 16:30 BaileyElizabethRay

Aperson does 50j of work to lift a crate using a pulley. the plley's work output is 42j. what is the pulleys mechanical efficiency?

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Aperson does 50j of work to lift a crate using a pulley. the plley's work output is 42j. what is the...

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