1. The problem statement, all variables and given/known data Wheel A of radius ra = 6.5 cm is coupled by belt B to wheel C of radius rc = 32.8 cm. Wheel A increases its angular speed from rest at time t = 0 s at a uniform rate of 6.2 rad/s2. At what time will wheel C reach a rotational speed of 108.3 rev/min, assuming the belt does not slip? 2. Relevant equations a=alpha x radius wf=w(initial)+ alpha x time 3. The attempt at a solution I used a=alpha x radius, twice to solve for alpha of ra and rc and then i want to use the wf=w(initial) +alpha x time..but which alpha do I use, ra or rc?