A uniform rectangular plate has mass m and sides a and b.
a) Show by integration that the moment of inertia of the plate about an axis is perpendicular to the plate and passes through one corner is (1/3)*m*(a^2+b^2)
I= integral( r^2, dm)
The Attempt at a Solution
do I account this problem as 3 dimensions or 2 dimensions ??
What should be r in this case since I have a and b