1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Angular Momentum

  1. Feb 6, 2010 #1
    Why can only the angular momentum of a rigid body rotating about an axis of symmetry be expressed as the product of the body's moment of inertia and its angular velocity?
  2. jcsd
  3. Feb 6, 2010 #2


    User Avatar
    Science Advisor

    The "moment of inertia" is actually a tensor. If a body is rotated about an axis that is not a symmetry axis (or, more generally, an axis for which the tensor is not diagonal), the angular momentum in not in the direction of the axis of rotation.
    This is discussed in Mechanics terxtbooks.
  4. Feb 6, 2010 #3
    I still don't really understand why not and my textbook doesn't supply much of an explanation.
    Could someone please explain more thoroughly in terms a high school physics student might be privy to?
  5. Feb 6, 2010 #4
    Would you describe (or cite) an example of that?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Angular Momentum
  1. Angular momentum (Replies: 1)

  2. Angular momentum (Replies: 1)

  3. Angular Momentum (Replies: 1)

  4. Angular momentum (Replies: 1)