A banked circular highway curve is designed for traffic moving at 95 km/h. The radius of the curve is 210 m.
Traffic is moving along the highway at 52 km/h on a stormy day.
(a) What is the minimum coefficient of friction between tires and road that will allow cars to turn without sliding?
(b) With this value of the coefficient of friction, what is the greatest speed at which the cars can turn without sliding?