momentum of inertia of a body is
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When a body is free to rotate around an axis, torque must be applied to change its angular momentum. ... For an extended rigid body, the moment of inertia is just the sum of all the small pieces of mass multiplied by the square of their distances from the axis in rotation.
Other units: lbf·ft·s2
SI unit: kg m2
Dimension: M L 2
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Answer:
The moment of inertia, otherwise known as the second moment of area, angular mass or rotational inertia, of a rigid body is a quantity that determines the torque needed for a desired angular acceleration about a rotational axis; similar to how mass determines the force needed for a desired acceleration. It depends on the body's mass distribution and the axis chosen, with larger moments requiring more torque to change the body's rotation rate.
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