A small rubber wheel is used to drive a large pottery wheel. The two wheels are mounted so that their circular edges touch. The small wheel has a radius of 2.8 cm and accelerates at the rate of 6.0 rad/s2, and it is in contact with the pottery wheel (radius 23.0 cm ) without slipping.Calculate (a) the angular acceleration of the pottery wheel, and (b) the time it takes the pottery wheel to reach its required speed of 65 rpm.