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!

Relating moment of Inertia and pendulum oscillation!

  1. Nov 18, 2012 #1
    I took a picture of the question to help.

    14tsihj.png

    I know that the moment of inertia for a rod (at one end, not the center) is:
    1/3ML^2

    And I know that the period of oscillation is:
    T=2∏√(L/g)

    But I don't know how to relate them... I tried doing Torque=Iα=Fdcosθ and solve in terms of Time.... but it wasn't becoming the equation and I had a random ω I couldn't get rid of. And I don't think I'm allowed to use the oscillation equation at all since I'm supposed to be deriving it, I'm just not sure what to do.
     
  2. jcsd
  3. Nov 18, 2012 #2

    ehild

    User Avatar
    Homework Helper
    Gold Member

  4. Nov 18, 2012 #3
    so am I solving for α in that equation and that's identical to the period?
     
  5. Nov 18, 2012 #4

    ehild

    User Avatar
    Homework Helper
    Gold Member

    No, α is the angular acceleration. The period is T.

    ehild
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Relating moment of Inertia and pendulum oscillation!
Loading...