Question

Define angular velocity.Show that the centripetal force on a partical undergoing uniform circular motion is -m omega2 rvector.

Answer 1

here is your answer mate :-

Angular velocity, also called rotational velocity, is a quantitative expression of the amount of rotation that a spinning object undergoes per unit time. It is a vector quantity, consisting of an angular speed component and either of two defined directions or senses.

hope it helps