A truck drives over a curved hill. What is the minimum coefficient of friction between the truck tires and the road so that, at the point shown in the figure, the truck can maintain a constant speed of 12 m/s? The radius of curvature of the hill is R = 80 m. You may treat the truck as if it were a point particle.

A truck drives over a curved hill. What is the minimum coefficient of friction between the truck tires and the road so that, at the point shown in the figure, the truck can maintain a constant speed of 12 m/s? The radius of curvature of the hill is R = 80 m. You may treat the truck as if it were a point particle.