A concrete highway curve with a radius of 500 ft. is banked to give lateral pressure equivalent to friction = 0.15. For what coefficient of friction will skidding impend for a speed of 60 miles per hour?

A highway curve having a radius of 120m has an angle of embankment equal to 9.31°. A car has a weight of 15 KN and center of gravity is located 0.80m above the roadway. Distance between front wheels is 1.2m if friction is great enough to prevent skidding, at what speed would overturning impend?

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4. The rear-wheel-drive pickup truck, with its center of gravity at G, is to negotiate a bump from a standing start in the position shown. The static and kinetic coefficients of friction between the tires and the pavement are 0.18 and 0.15, respectively. Determine the largest slope angle 0 that can be negotiated, assuming that the drive wheels are (a) spinning; and (b) not spinning. 12 in. 60 in. 40 in.