1. The problem statement, all variables and given/known data A 1200-kg car rounds a curve of radius 70m banked at an angle of 12 degrees. If the car is traveling at 90km/h, will friction force be required? If so, how much and in which direction? 2. Relevant equations mv^2/r = Fc 3. The attempt at a solution 90km/h = 25m/s Fc = Fnx + uFny mv^2/r = mgsin12 + u9.8cos12 25^2 = 9.8sin12 + u9.8cos12 u=.72; The coefficient of friction .72 and the force of friction will be perpendicular to the normal force. Can someone confirm that this is the correct answer?