Getting your Trinity Audio player ready...

Hold down the T key for 3 seconds to activate the audio accessibility mode, at which point you can click the K key to pause and resume audio. Useful for the Check Your Understanding and See Answers.

Linear and Angular Velocity - help4

Angular velocity refers to the rate at which a point rotates about the axis of rotation. Angular velocity can be related to the linear velocity and the distance the point is from the axis of rotation.

There are four similar versions of this question. Here is one of the versions:

Version 1:
Two objects – A and B – are located on the outer edge of two different rotating turntables, each having the same radius but a different turning rate. The linear velocity of each object is shown. Which object has the greatest angular velocity?
Object A has the greatest angular velocity.
Object B has the greatest angular velocity.
Both objects have the same angular velocity.

Angular velocity is the rate at which a point on the turntable rotates about its axis. This rate is measured as a change in the angular position divided by a change in time, Δθ/Δt. The angular position can be in units of degrees or radians. Every point on the turntable will change its angular position by the same amount in the same period of time. For instance, if it takes 2 seconds for point A to complete a full 360° revolution (or 2•π), then it will take 2 seconds for point B to complete the same revolution. This is to say that all points on the same rotating object rotate together at the same angular velocity. While different points with varying distance from the axis will have different linear velocities, every point will have the same angular velocity.

Try these links to The Physics Classroom Tutorial for more help with understanding the concept of angular position and displacement:

Sorry. We hope to add resources in the future.