Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Angular acceleration without rotation?

  1. Mar 4, 2012 #1
    If rod BD is fixed at collar C, it is not rotating, correct? Why is the angular acceleration being asked if it's not rotating?
  2. jcsd
  3. Mar 5, 2012 #2
    It's not fixed at collar C, it's sliding through it. It if were fixed, there would be 0 degrees of freedom, and OB could not be rotating.
  4. Mar 5, 2012 #3
    it also looks like the collar can rotate at point C
  5. Mar 5, 2012 #4
    This is also a kinematics problem, not an introductory physics problem, and involves using relative velocities.
  6. Mar 5, 2012 #5
    Nevermind, it is rotating. Thanks!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook