12. A 12-kg traffic light is suspended as shown. (a) (3 pts) What is the tension in the vertical string 1 (T,)? 8 Point A (b) (3 pts) Draw the free body diagram of point A and label the forces. (1 pt) Draw the acceleration vector for point A or write a = 0 to the right of the FBD. a = m/s - d) (8 pts) What is the tension in string 2 (T,) and string 3 (T3)