The moment of inertia of a torus of uniform density with outer radius a and inner radius b about a line through the center of mass perpendicular to the plane of the torus
Torus Moment of Inertia (MoI): The calculator returns the moment of inertia.
The formula for the moment of inertia of a torus about a line through the center of mass is:
MoI = (M•(7a²-6ab+3b²))/4
where: