申論題

4. The figure shows a car heading toward us as it travels around a circular track of radius 24.0 m. The coefficient of static friction between the tires and the track is 0.600. What speed (m/s) puts the car on the verge of sliding out of the circle?

(A) 11.9 (B) 31.6 (C) 24.7 (D) 5.00 (E) 53.4