Suppose that a pulley system is used to lift a heavy crate, but the pulleys have rusted
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Suppose that a pulley system is used to lift a heavy crate, but the pulleys have rusted and there are frictional forces acting on the pulleys. Will the useful work output of this system be greater than, equal to, or less than the work input? Explain.
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According to the conservation of energy no machine can output more energy than the input energy As ...View the full answer
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Related Book For
Physics of Everyday Phenomena A conceptual Introduction to physics
ISBN: 978-0073512112
6th edition
Authors: W. Thomas Griffith, Juliet W. Brosing
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