An 810-kg race car can drive aroundan unbanked turn at a maximum speed of 61 m/s without slipping. The turn has a radius of curvature of 175 m. Air flowingover the car's wing exerts a downward-pointing force (calledthe downforce) of 11500 N on the car.
a) What is the coefficient of static friction between the trackand the car's tires?
b) What would be the maximum speed if no downforce acted on thecar?