The coefficient of friction between the wheel and the horizontal surface is 0.4
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The coefficient of friction between the wheel and the horizontal surface is 0.4

The coefficient of friction between the wheel and the horizontal surface is 0.4. The wheel has a mass of 25 kg and is pinned to the massless bar AB. Bar AB is pinned to the horizontal surface at A. A moment M is applied to the wheel in the direction shown. Determine the magnitude of the moment M for impending motion.

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Hint
EconomicsCoefficient of friction, ratio of the frictional force resisting the motion of two surfaces in contact to the normal force pressing the two surfaces together. It is usually symbolized by the Greek letter mu (μ). Mathematically, μ = F/N, where F is the frictional force and N is the normal force....

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