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A curve of radius 78 m is banked for a design speed of 100 km/h. If...

A curve of radius 78 m is banked for a design speed of 100 km/h.

If the coefficient of static friction is 0.37 (wet pavement), at what range of speeds can a car safely make the curve? [Hint: Consider the direction of the friction force when the car goes too slow or too fast.]

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