Featured topics
Circular motion and rotation
Circular and rotational kinematics: angles, angular velocity, centripetal acceleration and angular MRUA equations.
Key formulas
- Angular displacement
The angular displacement is the difference between the final and initial angles.
- Average angular velocity
Ratio of the angular displacement to the elapsed time interval.
- Instantaneous angular velocity
Derivative of the angle with respect to time.
- Angular frequency
Angular frequency is 2π times the frequency, or 2π divided by the period.
- Angular velocity with constant acceleration
Angular velocity with constant angular acceleration.