moment of inertia origin
Moment of Inertia. The second moment, or moment of inertia, of a point mass m about the origin is the mass times the square of the distance to the origin, I = m(x 2 + y 2). The moment of inertia is related to the kinetic energy of rotation. A mass m moving at speed v has kinetic energy. KE = Â½ mv 2.