Question

Explain the physical significance of moment of inertia.

Answer 1

Moment of inertia is the mass property of a rigid body that determines, the torque needed for a desired angular acceleration about an axis of rotation.

Answer 2

Moment of inertia of a point mass w.r.t. an axis of rotation is defined as the product of the mass and the square of the distance from the axis.


Moment of inertia, I = mr2 Moment of inertia is the rotational analog of mass in linear motion. Moment of inertia of a rotating body offers the resistance to the rotational motion.


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