639_Dynamics 11ed Manual

639_Dynamics 11ed Manual - velocity . Given: M 60 kg = k G...

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Engineering Mechanics - Dynamics Chapter 19 Solution: Initial Guess: F CB 1N = t 1s = N A 1N = Given M r 2 2 ωμ k N A rt + 0 = F CB cos θ () tN A t 0 = F CB sin θ tM g t μ k N A t + 0 = F CB N A t Find F CB N A , t , () = N A 96.55 N = F CB 193 N = t 3.11 s = Problem 19-10 A flywheel has a mass M and radius of gyration k G about an axis of rotation passing through its mass center. If a motor supplies a clockwise torque having a magnitude M = kt , determine the flywheel’s angular veliocity at time t 1 . Initially the flywheel is rotating clockwise at angular
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Unformatted text preview: velocity . Given: M 60 kg = k G 150 mm = k 5 N m s = t 1 3 s = 2 rad s = Solution: M k G 2 t 1 t kt d + M k G 2 1 = 1 1 M k G 2 t 1 t kt d + = 1 18.7 rad s = Problem 19-11 A wire of negligible mass is wrapped around the outer surface of the disk of mass M . If the disk is released from rest, determine its angular velocity at time t . 637...
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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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