A roll of paper has a uniform weight of 0.75 lb and is suspended from the wire
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A roll of paper has a uniform weight of 0.75 lb and is suspended from the wire hanger so that it rests against the wall. If the hanger has a negligible weight and the bearing at O can be considered frictionless, determine the force P needed to start turning the roll if ? = 30o. The coefficient of static friction between the wall and the paper is ?s = 0.25.
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