The double pulley shown is attached to a 0.5-in.-radius shaft which fits loosely in a fixed bearing.
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The double pulley shown is attached to a 0.5-in.-radius shaft which fits loosely in a fixed bearing. Knowing that the coefficient of static friction between the shaft and the poorly lubricated bearing is 0.40, determine the magnitude of the force P required to start raising the load.
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4.5 in. 2.25 in. 40 Ib
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