1. The problem statement, all variables and given/known data Derive a relationship between the speed v, of a body moving in a circle of radius r, and the frequency f, of the revolutions. 2. Relevant equations v=2πr/T T=1/F 3. The attempt at a solution Well, I thought this would be as simple as solving for F in the second equations and substituting into the original formula. Eg: v=2πr/T T=1/F F=1/T v=2πr/1/F v=2πr/F Is the above correct? Could I expand it into more steps, like how one would derive F = 1/T, I already know how to derive v=2πr/T. Thanks!