781_Dynamics 11ed Manual

781_Dynamics 11ed Manual - p determine the angular velocity...

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Engineering Mechanics - Dynamics Chapter 21 Solution: I 3 80 W g 4 r 2 L 2 + () W g 3 L 4 2 + = I z 3 10 W g r 2 = Σ M x I φ ' 2 sin θ () cos () I z ' sin () ' cos () ψ ' + () + = W 3 L 4 sin () I ω y 2 sin () cos () I z y sin () y cos () ' + () + = ' 1 4 3 WL 4 I y 2 cos () 4 I z y 2 cos () + I z y = ' 652 rad s = Problem 21-73 The toy gyroscope consists of a rotor R which is attached to the frame of negligible mass. If it is observed that the frame is precessing about the pivot point O at rate
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Unformatted text preview: p determine the angular velocity R of the rotor. The stem OA moves in the horizontal plane. The rotor has mass M and a radius of gyration k OA about OA . Given: p 2 rad s = M 200 gm = k OA 20 mm = a 30 mm = g 9.81 m s 2 = Solution: M x I z y z = 779...
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