Help please!

Attempt? v 0 s, the operator switches the wheel to a subsequent times is given by A moton'zed wheel is spinning with a rotational velocity of ma = 1.25 radls. At t = higher speed setting. The rotational velocity of the wheel at all M co(t) = moarctan (c + btz) where c = 1.5574 and b = 6.97 5'2. 9 Macmillan Leamin At what time tam\" is the rotational acceleration at a maximum? What is the maximum tangential acceleration a, of a point on the wheel a distance R = 1.17 m from its center