33. A ball of mass 10 kg is attached to the end of a 240 cm long string and whirled around in a circle that describes a vertical plane. [T 6, C - 3] (a) What: is the minimum speed that the ball can be moving at and still maintain a circular path? Provide a free-body diagram. (1:) At this speed, what is the maximum tension in the string? Provide another free-body diagratn. (c) If the ball is rotated in a horizontal circle at: the same speed with the end of the string held above the head, what angle does the string make with the horizontal