1. The problem statement, all variables and given/known data A car with a mass of 1190 kg is traveling in a mountainous area with a constant speed of 78.2 km/h. The road is horizontal and flat at point A, horizontal and curved at points B and C. The radii of curvatures at B and C are: rB = 155 m and rC = 120 m. Calculate the normal force exerted by the road on the car at point B. 2. Relevant equations Forces... x = f = mv^2/r y = -mg + n = 0 3. The attempt at a solution If n = mg then where does the radius come into play? I must have something set up wrong in the forces but I don't know what.