Chapter 8: Rotational Motion

Flashcards covering key vocabulary and concepts from Chapter 8 on Rotational Motion.

Angular displacement

The angle through which a point or line has been rotated in a specified sense about a specified axis.

Angular velocity (ω)

The rate of change of angular displacement, typically measured in radians per second.

Angular acceleration

The rate at which angular velocity changes with time.

Torque (τ)

The rotational equivalent of linear force, calculated as the product of the lever arm distance and the applied force.

Rotational inertia (I)

A measure of an object's resistance to changes in its rotation, depending on mass distribution relative to the axis of rotation.

Centripetal acceleration

The acceleration that occurs in circular motion, directed towards the center of the circle.

Frequency (f)

The number of complete revolutions per second, measured in hertz.

Period (T)

The time it takes for one complete revolution, which is the inverse of the frequency.

Conservation of angular momentum

If the net external torque on a system is zero, the total angular momentum of that system remains constant.

Rolling motion (without slipping)

Motion where an object rolls over a surface without sliding, such that the velocity of the point in contact with the surface is zero.