I have to show what the moment of inertia of a rectangular plate with mass M and sides A and B is about its centre of mass. I have come up with(adsbygoogle = window.adsbygoogle || []).push({});

[tex]\frac{1}{12}M(a^2 + b^2)[/tex]

Now I have to show what the moment of inertia of the same plate is except this time about an axis perpedicular to the plate and passes through one corner. I know it is:

[tex]\frac{1}{3}M(a^2 + b^2)[/tex] But having some problems proving it

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Moment of inertia

**Physics Forums | Science Articles, Homework Help, Discussion**