13. A car is traveling at a speed of 120 km/h and attempts to take a turn. The coefficient of friction of the tires on the dry asphalt is 0.90. Determine the difference in the radius of the turn if the road is horizontal or banked at 20 into the turn (but the car is still turning on the horizontal plane). Draw Free Body Diagrams that clearly show the components of the forces that you need. You must show how you get to any equations you use (i.e. derive them from your FBD). X