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A curve of radius 68 m is banked for a designed speed of 85km/h. If the...

A curve of radius 68 m is banked for a designed speed of 85km/h. If the coefficient of static friction is 0.30, at what range of speeds can a car safely make the curve? (You must show schematic and free-body diagrams, and apply Newton's 2nd law of motion.)

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