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A curve of radius 69 m is banked for a design speed of 78 km/h. If...

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Physics

A curve of radius 69 m is banked for a design speed of 78 km/h.If the coefficient of static friction is 0.30 (wet pavement), atwhat range of speeds can a car safely make the curve? [Hint:Consider the direction of the friction force when the car goes tooslow or too fast.]

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