1. The problem statement, all variables and given/known data An automobile club plans to race a 740 kg car at the local racetrack. The car needs to be able to travel around several 175 m radius curves at 85 km/h. What should the banking angle of the curves be so that the force of the pavement on the tires of the car is in the normal direction? (Hint: What does this requirement tell you about the frictional force?) 2. Relevant equations a=v^2/r Tcos(theta)=mv^2/r F=ma 3. The attempt at a solution Friction must equal 0?