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88 A machine lifts an object of weight Wat constant speed through a vertical distance h. The efficiency of the machine is 25%. The
88 A machine lifts an object of weight Wat constant speed through a vertical distance h. The efficiency of the machine is 25%. The total input energy to the machine is A. B. C. D. 0.25Wh. 0.75Wh. 2.5Wh. 4.0Wh.
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A machines efficiency can be defined as the percentage difference between its total wor...
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Mechanics of Materials
Authors: James M. Gere, Barry J. Goodno
7th edition
495438073, 978-0495438076
