What force is responsible for changes in angular velocity?

If the net torque on an object is zero, what is true about its angular momentum?

Which of the following affects the moment of inertia of an object?

Two objects have the same mass and radius. One is a solid sphere, and the other is a hollow sphere. Which has the greater moment of inertia?

A figure skater starts a spin with her arms extended. As she pulls her arms in, what happens to her angular speed?

What are the units for angular velocity?

Which of the following is the rotational analog of force?

If an object is rotating at a constant angular velocity, what is its angular acceleration?

Which quantity represents the resistance of an object to changes in its rotational motion?

What is the relationship between linear velocity (v) and angular velocity (ω) for a point on a rotating object at a distance (r) from the axis of rotation?