3. A 250 g piece of kryptonite is attached to a 90 cm long massless string to form a pendulum. At its highest point (Point A) the string makes an angle of 55 with the vertical. Its lowest point is Point B and Point C is where the string makes an angle of 35 with respect to the vertical. Find the tension in the string and angular acceleration of the rock at (a) Point A, (b) Point B and (c) Point C. (a) Draw a FBD of the kryptonite, including all relevant angles and axes at Point A, Point B and Point C. (Three total FBDs...) (b) Find the angular speed, angular acceleration and tension in the string at Point A. (c) Find the angular speed, angular acceleration, centripetal force and tension in the string at Point B. (d) Find the angular speed, angular acceleration, centripetal force and tension in the string at Point C.