644_Dynamics 11ed Manual

644_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

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Engineering Mechanics - Dynamics Chapter 19 the speed of the block at time t after a constant force F is applied to the rope wrapped around the inner hub of the pulley. The block is originally at rest. Neglect the mass of the rope. Units Used: kN 10 3 N = Given: m p 15 kg = F 2kN = k O 110 mm = r i 75 mm = m A 40 kg = r o 200 mm = t 3s = Solution: Guess v A 1 m s = ω 1 rad s = Given F r i tm A gr o t + m p k O 2 m A v A r o = v A r o = v A Find v A , () = 120.44 rad s = v A 24.1 m s = Problem 19-19 The spool has weight W and radius of gyration k O . A cord is wrapped around its inner hub and the end subjected to a horizontal force P . Determine the spool’s angular velocity at time t starting from rest. Assume the spool rolls without slipping.
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This note was uploaded on 08/16/2011 for the course EGN 3321 taught by Professor Christianfeldt during the Spring '08 term at University of Central Florida.

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