Chapter 8 Problem 50* The blades of a ceiling fan have a radius of 0.380 m and are rotating about a fixed axis with an angular velocity of +1.50 rad/s. When the switch on the fan is turned to a higher speed, the blades acquire an angular acceleration of +2.00 rad/s2 . After 0.500 s has elapsed since the switch was reset, what is (a) the total acceleration (in m/s2 ) of a point on the tip of a blade and (b) the angle between the total acceleration a and the centripetal acceleration c a ?