612_Dynamics 11ed Manual

612_Dynamics 11ed Manual - 2 + = v C Find v C ( ) = v C...

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Engineering Mechanics - Dynamics Chapter 18 The system consists of disk A of weight W A , slender rod BC of weight W BC , and smooth collar C of weight W C . If the disk rolls without slipping, determine the velocity of the collar at the instant the rod becomes horizontal, i.e. θ = 0 °. The system is released from rest when = 0 . Given: W A 20 lb = L 3f t = W BC 4lb = r 0.8 ft = W C 1lb = g 32.2 ft s 2 θ 0 45 deg = Solution: Guess v C 1 ft s = Given W BC L 2 θ 0 () W C L θ 0 () + 1 2 W C g v C 2 1 2 W BC g L 2 3 v C L
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Unformatted text preview: 2 + = v C Find v C ( ) = v C 13.3 ft s = Problem 18-29 The cement bucket of weight W 1 is hoisted using a motor that supplies a torque M to the axle of the wheel. If the wheel has a weight W 2 and a radius of gyration about O of k O , determine the speed of the bucket when it has been hoisted a distance h starting from rest. 610 *Problem 18-28...
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