1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted