The rotational analogue of mass in linear motion is:
Correct answer: C. Moment of inertia
- A. Torque
- B. Weight
- C. Moment of inertia
- D. Angular momentum
Explanation
Moment of inertia is referred to as the rotational analogue of mass in linear motion. It appears in the relationships for the dynamics of rotational motion. The moment of inertia must be specified concerning a chosen axis of rotation.
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About Angular and Linear Quantities
Rotational motion relates angular displacement, angular velocity and angular acceleration to linear displacement, tangential velocity and tangential acceleration through the radius. Questions use radians, v equals r omega and tangential acceleration, while distinguishing tangential velocity from centripetal acceleration and angular quantities from their linear counterparts.
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