A 0.50-kg ball that is tied to the end of a 1.3-m light cord is revolved in a horizontal plane, with the cord making a 8 = 30 angle with the vertical. (a) Determine the ball's speed. [ Jms (b) If, instead, the ball is revolved so that its speed is 3.5 m/s, what angle does the cord make with the vertical? I (c) If the cord can withstand a maximum tension of 9.3 N, what is the highest speed at which the ball can move