https://www.cmetechnology.com/products/krd300-moment-of-inertia-measurement-system/
Mass Moment of Inertia (Moment of Inertia) is a measure of an object's resistance to change in rotation direction. Moment of Inertia has the same relationship to angular acceleration as mass has to linear acceleration.
Moment of inertia measurement system mainly measures the axial and radial moment of inertia. The radial moment of inertia is calculated by measuring the free swing period of the swing system under load and no-load when the specimen installation axle is parallel with the swing axle of the measurement instrument according to the swing measurement principle. As for the specimen that cannot be fixed vertically, the axial moment of inertia is calculated with the measured rolling period of the