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Moment of inertia 2: Perpendicular axis theorem

In the last section, concept of moment of inertia was introduced and the parallel axis theorem in making the calculation of the moment of inertia easy about any point parallel to the center of gravity when the moment of inertia about the center of gravity is known. Here, the perpendicular axis theorem is explained to calculate the moment of inertia when the moment of inertia about two planes perpendicular to a plane is known,