Question: A car is safely negotiating an unbanked circular turn at a speed of 18 m/s. The road is dry, and the maximum static frictional force acts on the tires. Suddenly a long wet patch in the road decreases the maximum static frictional force to one third of its dry-road value.
Part A: If the car is to continue safely around the curve, to what speed must the driver slow the car?
I want help to determine to what speed the driver must slow the car.