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Homework Help: Static friction

  1. Oct 13, 2006 #1
    If a curve with a radius of 75.0 m is perfectly banked for a car traveling 67.8 km/hr, what must be the coefficient of static friction for a car not to skid when traveling at 89.2 km/hr?

    i know i need an angle first, but how do i get it?
  2. jcsd
  3. Oct 13, 2006 #2

    Doc Al

    User Avatar

    Staff: Mentor

    By analyzing the forces acting on the car and applying Newton's 2nd law.
  4. Oct 13, 2006 #3
    Remember that the normal force is the resultant of the weight and the cent. acceleration force for the perfectly banked case.
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