# Angular acceleration?

1. Nov 4, 2003

### Nanabit

How do you find angular acceleration when all you have is angular and linear velocity and a radius of a circle? I tried to use the kinematics but all of them require time or theta.

2. Nov 4, 2003

### StephenPrivitera

If you know the angular velocity, you need only to take the derivative of this to get the angular acceleration.
If the angular velocity is constant, then the angular acceleration is 0.