Kinematics of Rigid Bodies:Calculating Angular Velocity

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SUMMARY

The discussion focuses on calculating the angular velocity magnitude of member BC in a rigid body system. The key equations referenced are V = ωr and Va = Vb + Va/b. The radius at point C is specified as 0.4 m, which is essential for determining the momentary velocity of point C. The user seeks clarification on the interpretation of the slope indicated by "4|_ 3" in relation to member BC's position.

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  • Familiarity with rigid body dynamics
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  • Basic geometry concepts related to slopes and angles
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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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