The moment of inertia of blocks is about double what it should be.
The moment of inertia of spheres is correct, I am unaware of other objects.
When you make a block with a size of (x, y, z) and make a block of the same size out of many smaller blocks, you expect it to behave the same way, but it does not. The block made out of smaller blocks rotates faster when torqued the same way.
Also blocks look wrong when you drop them on the ground. Like they should spin faster.
I THINK the moment of inertia of blocks is computed as
mass/6*(y^2 + z^2, z^2 + x^2, x^2 + y^2)
It SHOULD be
mass/12*(y^2 + z^2, z^2 + x^2, x^2 + y^2)
place file: MomentComparison.rbxl (20.4 KB)