The disk has mass M and is originally spinning at the end of the strut with angular velocity ω. If it is then placed against the wall, for which the coefficient of kinetic friction is μ_k determine the time required for the motion to stop. What is the force in strut BC during this time?

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Given: M = 20 kg rad S @ = 60 Uk = 0.3 8 = 60 deg r = 150 mm 8 = 9.81 m 2