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Homework Help: Roller Coaster and Apparent Weight

  1. Oct 1, 2006 #1
    Circular Motion

    A concrete highway curve of radius 70m is banked at a 15 degree angle.

    What is the max speed with which a 1500kg rubber-tired car can take this curve without sliding?

    I learned that the static coeffiecient of friction of rubber on concrete is 1.0 for this problem.

    I tried net Force = StaticFrictionCoefficient(Normal Force)
    Normal = Weight = Mass * Gravity

    So I ended up with-
    F = 1(1500*9.8) = 14700N
    Then I did 14700 * 70cos(15).
    Not the right answer... not sure what I'm doing, obviously
    Last edited: Oct 1, 2006
  2. jcsd
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