- Angular Velocity: RPM (revolutions per minute) = 60* RPS (revolutions per second) RPS * 2 π (radians per second) - Power: P = T* ω (Power=Torque*Angular Speed); watts = N-m * rad/sec Some Basic Physics Formulas - Torque: T = I* α (Torque = Inertia*Angular Acceleration); N-m = kg-m 2 * rad/sec 2 z The Power and Torque