1. A bicycle is placed on a service rack with its wheels hanging free. As part of a bearing test, the front wheel is spun at the rate of N = 59 rev/min. Assume that this rate is constant, and determine the speed v and magnitude a of the acceleration of point A. I have attached an image of the question. 2. Relevant equations v = ds/dt = ρ dβ/dt v = rθ' 3. The attempt at a solution I initially tried converting N = 59 rev/min to 6.178466 rad/sec to use in: v = ds/dt = ρ dβ/dt but this left me with radians/sec instead of ft/sec. I suspect that I need to use v = rθ' but I'm not sure how you take the derivative of an angle. Help is appreciated.