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..