Question

A curve with a 130m radius on a level road is banked at the correct angle for a speed of 20 M/S?…

A curve with a 130m radius on a level road is banked at the correct angle for a speed of 20 M/S?
If an automobile rounds this curve at 30 M/S , what is the minimum coefficient of static friction between tires and road needed to prevent skidding?

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