General Science • PhysicsMedium
Which of the following describes the resistance of a body to changes in its rotational motion?
A. Momentum
B. Torque
C. Moment of inertia✓ Correct Answer
D. Angular impulse
💡 Solution & Explanation
The moment of inertia is the quantitative measure of a rigid body's rotational inertia, representing its resistance to any change in its angular velocity about a rotational axis. It depends heavily on the mass distribution relative to the axis of rotation. While linear momentum measures translational motion, torque acts as the rotational counterpart to force. The SI unit of moment of inertia is kilogram meter squared.
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