Rotational Motion: Chapters 10 & 11

Flashcards covering key vocabulary and definitions from Chapters 10 and 11 on rotational motion.

Angular Quantities

Describes quantities associated with rotational motion, such as angular displacement, velocity, and acceleration.

Angular Displacement

The angle θ through which an object has rotated about an axis in a specified direction.

Instantaneous Angular Velocity

The angular velocity of an object at a specific moment in time.

Tangential Acceleration

The acceleration that is tangent to the path of an object in motion, due to changing angular velocity.

Centripetal Acceleration

The acceleration directed towards the center of a circular path, experienced by an object in circular motion.

Torque

A measure of the force causing an object to rotate; calculated as τ = r × F.

Rotational Inertia (Moment of Inertia)

The resistance of an object to changes in its rotational state of motion, dependent on mass distribution.

Constant Angular Acceleration

A condition where the rate of change of angular velocity is constant over time.

Rolling Motion

A combination of rotational and translational motion, typically seen in wheels or balls.

Angular Momentum

The quantity of rotation of an object, used to describe its rotational motion, represented as L = Iω.

Conservation of Angular Momentum

The principle stating that if no external torque acts on a system, its angular momentum remains constant.

Rotational Kinetic Energy

The energy due to the rotation of an object, expressed as KE_rot = (1/2)Iω².

Frequency (ω)

The number of complete revolutions per second, measured in Hertz (Hz).

Period (T)

The time taken for one complete revolution, the inverse of frequency.

Lever Arm

The perpendicular distance from the axis of rotation to the line of action of the force.