Kinematics of Rigid Bodies:Calculating Angular Velocity

AI Thread Summary
The discussion focuses on calculating the angular velocity magnitude of member BC in a rigid body problem. The user initially attempts to use the equation V = ωr but encounters difficulty determining the radius of the disc. It is clarified that the radius at point C is 0.4 m, which can be used with the angular speed to find the velocity at that point. There is also a mention of a slope indicator "4|_ 3," suggesting it relates to the orientation of member BC. The conversation emphasizes the importance of understanding the geometry and relative motion in solving the problem.
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Homework Statement



What is the angular velocity magnitude of member BC?

Problem Figure Attached:

Homework Equations


V = w r
Va= Vb + Va/b

The Attempt at a Solution


I thought the problem would be simple as I could use v=w r to calculate the velocity and then use the equation of relative motion to calculate BC...But I am stuck trying to figure out the radius of the disc... Help please..
 

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The full radius of the disk is not necessary. The radius at point C is given as .4 m. That with the angular speed gives the momentary velocity of point C. I'm assuming that the "4|_ 3" thingy is giving the slope of BC at that moment?
 

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