angular velocity and angular frequency?

Question

is angular velocity and angular frequency same? if not please explain the difference. but we use the symbol w for both.

Answer 1

They are the same in that both angular velocity and angular frequency represent the angle an object turns in one unit of time. The unit could be radians/sec, RPM, deg/sec, etc...

They are different in that angular velocity is a vector quantity, whereas angular frequency is a scalar one. By definition when an object rotates in the direction of a wall-clock' hands, its angular velocity vector points perpendicularly into the wall.

Answer 2

Angular velocity is expressed in radians/sec; angular frequency is also radians/sec, so it would seem they are the same thing. However, angular velocity is used in mechanics referring to rotating objects and angular frequency in electricity and electronics referring to the frequency of electric signals.

Answer 3

Angular velocity is typically measured in radians per second. Angular frequency is typically measured in revolutions per minute. This can also be expressed in radians per second. One revolution is 2pi radians.