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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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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?

User GlenRSmith
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1 Answer

4 votes
(42/50)*100=84%

Because efficiency =(Useful/total)*100

Hope this helps!
User Sweetzyl Pili
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