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An auto mobile traveling at 60 mph rounds a curve banked at 10 degrees. The radius...

An auto mobile traveling at 60 mph rounds a curve banked at 10 degrees. The radius of the curve is 200 ft. (a) What is the minimum coefficient of friction that will keep the car on the road? (b) What would the bank angle need to be in order for the car to stay on the road without any friction?

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