Question

does anybody know the equation for angular velocity

Answer 1

You can also use,
\[\omega=\frac{v}{R}\]
where v is the linear velocity, and R is the curvature radius of the trayectory. If the movement is periodic and you know the natural frequency f, then
\[\omega=2\pi f\]

Answer 2

http://en.wikipedia.org/wiki/Angular_velocity