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!

Calculating moment of inertia

  1. Mar 13, 2004 #1
    I have a uniform rod of mass M, which rotates about one of its ends, and a point mass equal to the mass of the rod is added to the other end.

    To calculate the new moment of inertia, do I just need to add the moment of inertia of the rod and that of the point mass together?

    i.e. I = (MR^2)/3 + MR^2 ?

    Any help would be much appreciated.
     
  2. jcsd
  3. Mar 13, 2004 #2

    ShawnD

    User Avatar
    Science Advisor

    Yes you add them together, but make sure you add them together with respect to the same axis. Remember the parallel axis theorum.
     
  4. Mar 13, 2004 #3
    Cheers for that.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Similar Discussions: Calculating moment of inertia
Loading...