The surface of the exit road is horizontal,not banked.(See figure.)If the static friction between the tires and the surface of the road is µs = 0.688 and the maximum speed with which the car can exit the highway safely without sliding is 25.2 m/s,what is the radius of curvature of a highway exit ,r?
A)157 m
B)64.7 m
C)94.1 m
D)207 m
E)85.6 m

Question

The surface of the exit road is horizontal,not banked.(See figure.)If the static friction between the tires and the surface of the road is µs = 0.688 and the maximum speed with which the car can exit the highway safely without sliding is 25.2 m/s,what is the radius of curvature of a highway exit ,r? 
A)157 m 
B)64.7 m 
C)94.1 m 
D)207 m 
E)85.6 m

Quizplus · Accepted Answer

The Answer of The surface of the exit road is horizontal,not banked.(See figure.)If the static friction between the tires and the surface of the road is µs = 0.688 and the maximum speed with which the car can exit the highway safely without sliding is 25.2 m/s,what is the radius of curvature of a highway exit ,r? 
A)157 m 
B)64.7 m 
C)94.1 m 
D)207 m 
E)85.6 m

The Surface of the Exit Road Is Horizontal,not Banked