19-42. The vertical shaft is rotating with an angularvelocity of 3 rad/s when 0 = 0°. If a force F is applied to thecollar so that e = 90°, determine the angular velocity of theshaft. Also, find the work done by force F. Neglect the massof rods GH and EF and the collars I and J. The rods ABand CD each have a mass of 10 kg.0.3 m0.3 mPB0.3 m0.3 mG.140.1 m0.1 m

Consider the situation of the system which rotating about the z axis when the angle θ = 0o.

Answered: 19-42. The vertical shaft is rotating…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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19–33. The 80-kg man is holding two dumbbells while standing on a turntable of negligible mass, which turns freely about a vertical axis. When his arms are fully extended, the turntable is rotating with an angular velocity of 0.5 rev/s. Determine the angular velocity of the man when he retracts his arms to the position shown. When his arms are fully extended, approximate each arm as a uniform 6-kg rod having a length of 650 mm, and his body as a 68-kg solid cylinder of 400-mm diameter. With his arms in the retracted position, assume the man is an 80-kg solid cylinder of 450-mm diameter. Each dumbbell consists of two 5-kg spheres of negligible size. -0.20 m 0.65 m 0.3 m H0.3 m Prob. 19–33
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