This apparatus is designed to calculate the moment of inertia of disc through rolling action. In this apparatus, discs of various materials are used to calculate moment of inertia. A metal carrier with a three point support is used as an inclined plane for the experiment; the different rotating masses are rolled down this plane.
The inclined plane can be precisely aligned using integrated spirit levels and three bolts. The angle of inclination is adjusted using an adjustment bolt. A ruler is integrated directly into the inclined plane for measuring the distance. The steel rotating masses each have self centering conical pins.