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A circular curve of highway is designed for traffic moving at 91 km/h. Assume the traffic consists of cars without negative lift. (a) If the
radius of the curve is 150 m, what is the correct angle of banking of the road? (b) If the curve were not banked, what would be the
minimum coefficient of friction between tires and road that would keep traffic from skidding out of the turn when traveling at 91
km/h?
(a) Number
i
Units
(b) Number
Units

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