39. A ball of mass 5.0 kg is attached to the end of a 2.2 m long string and whirled around in a circle that describes a vertical plane. [7 marks] (a) What is the minimum speed that the ball can be maving at and still maintain a circular path? Provide a free-body diagram.(3) (b) At this speed, what is the maximum tension in the string? Provide another free-body diagram.(2) (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?(2)