Of a body about an axis: the sum Y^,nr2 taken over all particles of the body where m is the mass of a particle and r its perpendicular distance from the specified axis. When expressed in the form Mk2, where A 1 is the total mass of the body A I=^2m, h is called the radius of gyration about the specified axis. Also used erroneously for second moment of area.
What is MOMENT OF INERTIA?
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