KileysMom7372 KileysMom7372

01-11-2018
Physics

contestada

A person 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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kamizam38 kamizam38

01-11-2018

(42/50)*100=84%

Because efficiency =(Useful/total)*100

Hope this helps!

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