Increases rotational inertia.

Causes angular acceleration.

Their rotational inertia decreases, and their angular speed increases.

Decreases angular acceleration.

The linear speed of its center of mass is related to its angular speed by $v_{cm} = R\omega$.

Torque ($au$) is a twisting force that causes rotation. It is the product of the force and the lever arm (the distance from the axis of rotation to the point where the force is applied).

Rotational inertia (I) is a measure of an object's resistance to changes in its rotational motion. It depends on the object's mass and how that mass is distributed relative to the axis of rotation.

Angular acceleration ($alpha$) is the rate of change of angular velocity with respect to time. It is measured in radians per second squared (rad/s²).

Net torque ($Sigma au$) is the sum of all torques acting on an object. It determines the angular acceleration of the object.

The lever arm is the perpendicular distance from the axis of rotation to the line of action of the force. It is a critical component in calculating torque.

The rotational equivalent of force; what causes an object to start rotating or change its rotation.

A measure of how much an object resists changes in its rotational motion.

The rate of change of angular velocity.

The net torque on an object is equal to the product of its rotational inertia and angular acceleration: $\sum \tau = I \alpha$.

The linear speed of a point on a rotating object, related to angular speed by $v = r\omega$.

The linear acceleration of a point on a rotating object, related to angular acceleration by $a = r\alpha$.