A roll of paper has a uniform weight W and is suspended from the wire hanger so
Question:
A roll of paper has a uniform weight W 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. The coefficient of static friction between the wall and the paper is μs.
Given:
W = 0.75 lb
θ = 30 deg
φ = 30 deg
μs = 0.25
a = 3 in
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