A pottery wheel with radius 25.1 cm is driven by a small rubber wheel, mounted so that the circular edges of the two wheels are in contact. The small wheel has a radius of 1.94 cm, and accelerates at 7.12 rad/s2. It remains in contact with the pottery wheel, and does not slip.
What is the angular acceleration of the pottery wheel?
How much time does it take the pottery wheel to reach its nominal angular speed of 68.2 rpm?