Question

Angular momentum is proportional to

• A. Inertia and angular speed
• B. Mass and angular speed
• C. Angular speed and volume
• D. Rate of change of angular speed

Answer 1

Answer: (A)

Inertia and angular speed

Answer 2

Angular momentum $L$ for a rigid body rotating about a fixed axis is given by:

$$L = I\,\omega$$

where:

• $I$ is the moment of inertia (rotational analogue of mass)
• $\omega$ is the angular speed

Thus, $L$ is directly proportional to both the moment of inertia and the angular speed.