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Disk Angular Velocity

Please see attachments.

ans. A)Wbd = 4.38 rad/sec curving down;
Vd = .306 m/sec up.
B) Wbd = 0; Vd = 1.05 m/sec down.
C) Wbd = 4.38 rad/sec curving up; Vd = .306 m/sec down.

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Because, vb = r*w
r = 0.07 m
w = 15 rad/s
=> vb = 15*0.07 = 1.05 m/s

a.) For Q(read as theta) = 0:
vb = 1.05 (horizontal ->)
direction of vb/d: Because, DB makes an ...

Solution Summary

The solution is provided step-by-step and a diagram is attached.

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