The analogue of mass in rotational motion is:

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(A) In translational motion,the property of a body to resist a change in its state of rest or uniform motion is called mass $(m)$.In rotational motion

Vedclass · Accepted Answer

moment of inertia

Vedclass · Answer

(A) In translational motion,the property of a body to resist a change in its state of rest or uniform motion is called mass $(m)$.In rotational motion,the property of a body to resist a change in its state of rotational motion is called the moment of inertia $(I)$.The rotational analogue of Newton's second law $(F = ma)$ is $	au = I\alpha$,where $	au$ is torque,$I$ is the moment of inertia,and $\alpha$ is angular acceleration.Thus,the moment of inertia plays the same role in rotational motion as mass does in translational motion.Therefore,the correct option is $A$.

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