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!

Moment of inertia of an ellipse formula

  1. May 15, 2013 #1
    I have to verify the formula of the moment of inertia of an ellipse about its' centroidal axis,
    is it M*(a^2 + b^2)/4.This is the one I got by myself.
    But in a webpage it was given as Pi*a*(b^3)/4.

    NOTE: don't ask for the proof of what I did.Its' a bit longer.I just wanna know whether its' correct or
  2. jcsd
  3. May 15, 2013 #2
    You are mixing things up. The Quantity given on the webpage is is the "Area moment of Intertia" not the mass moment of inertia. Read on the two quantities and then you will see what to do...
  4. May 15, 2013 #3
    Ok then what I found out was correct.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Moment of inertia of an ellipse formula
  1. Moment of inertia (Replies: 2)

  2. Moment of Inertia (Replies: 7)

  3. Moment of Inertia (Replies: 3)

  4. Moment of inertia (Replies: 1)