1. Not finding help here? Sign up for a free 30min 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 of a thin bar

  1. Nov 8, 2009 #1
    1. The problem statement, all variables and given/known data
    I scanned the question because there was a rather helpful diagram thats needed to solve the question.

    http://img52.imageshack.us/img52/2715/assignmentq.jpg [Broken]


    2. Relevant equations
    L=Iw , where I is the momentum tensor and w is the angular velocity.


    3. The attempt at a solution
    Again I scanned my work because i'm not very adapt with the latex commands.

    http://img69.imageshack.us/img69/9082/cci0811200900000.jpg [Broken]

    Okay I think I solved part a correctly and I can solve part b using the result from a. However I'm having difficulty with part a) ii where we have to directly integrate L.

    I know since v=wr rxv(cross proudct)=r2w-r(r*w)

    But I'm not sure what my r vector should be. I tried setting it as (x,0,R) but that just sent the whole thing to zero. So any pointers in this regard would be very helpful.
     
    Last edited by a moderator: May 4, 2017
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?



Similar Discussions: Angular Momentum of a thin bar
Loading...