A motorized wheel is spinning with a rotational velocity of mo = 1.?3 radfs. At r = O s, the operator switches the wheel to a higher speed setting. The rotational velocity of the wheel at all subsequent times is given by mm = cooarctan (r: + big) where c = 1.5514 and b = 6.75 s'z. At what time ram\" is the rotational acceleration at a maximum? What is the magnitude of the total acceleration of this point?I :1 m2