A 9-kg uniform disk is attached to the 5-kg slender rod AB

Chapter 16, Problem 16.91

(choose chapter or problem)

A 9-kg uniform disk is attached to the 5-kg slender rod AB by means of frictionless pins at B and C. The assembly rotates in a vertical plane under the combined effect of gravity and of a couple M which is applied to rod AB. Knowing that at the instant shown the assembly has an angular velocity of 6 rad/s and an angular acceleration of \(25\mathrm{\ rad}/\mathrm{s}^2\), both counterclockwise, determine (a) the couple M, (b) the force exerted by pin C on member AB.

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