Question

A wheel is rotating with angular velocity 14 rev/s. What angular acceleration would be needed to bring the wheel to rest in a single rotation?

Answer 1

avg vel = (14 + 0) / 2 = 7 rev/s

stop time = 1/7 s

distance = 1/2 a t^2
... 1 = 1/2 * a * (1/7)^2