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Homework Statement
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?)
Homework Equations
a=v^2/r
Tcos(theta)=mv^2/r
F=ma
The Attempt at a Solution
Friction must equal 0?