2. A light, un-stretchable string is attached securely at one end to a small dense ball of mass m; the other end is attached to the ceiling. The ball is thrown at a speed v so that the ball executes stable circular motion of radius R in a horizontal plane. The string makes an angle with the vertical. a. (5 points) Draw a good physics diagram. Use a straight edge. Be sure to choose a perspective that reveals all the forces acting at any instant. b. (10 points) What is the angle 8 in terms of the given information and any physical constants you may require? = c. (5 points) If this demonstration were performed on the moon (g 1.62 m/s) would the angle get larger or smaller than the identical one performed on the Earth? Support your answer.