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University Physics with Modern Physics
Consider a wet roadway banked as in Example 5.22 (Section 5.4), where there is a coefficient of static friction of 0.30 and a coefficient of kinetic friction of 0.25 between the tires and the roadway. The radius of the curve is $R =$ 50 m. (a) If the bank angle is $\beta= 25^{\circ}$, what is the $maximum$ speed the automobile can have before sliding $up$ the banking? (b) What is the $minimum$ speed the automobile can have before sliding $down$ the banking?