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!

Homework Help: Second Moment of Inertia of a Rectangle

  1. Dec 6, 2012 #1
    1. The problem statement, all variables and given/known data
    Find the second moment of inertia of a rectangle.

    3. The attempt at a solution

    Anyone know why my answer is 4 times too big?
  2. jcsd
  3. Dec 6, 2012 #2


    User Avatar
    Homework Helper

    Your limits of integration imply that your axis of references is the x-axis (which is correct by the way).

    The "correct" answer you want is to get Ix about the centroidal axis. In which case your limits would be different.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook