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Homework Help: Kinematics of Rigid Bodies:Calculating Angular Velocity

  1. Mar 17, 2008 #1
    1. The problem statement, all variables and given/known data

    What is the angular velocity magnitude of member BC?

    Problem Figure Attached:

    2. Relevant equations
    V = w r
    Va= Vb + Va/b

    3. 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..

    Attached Files:

  2. jcsd
  3. Mar 18, 2008 #2

    Chi Meson

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    Science Advisor
    Homework Helper

    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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