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Homework Help: Circular Motion force problem?

  1. Nov 16, 2008 #1
    1. The problem statement, all variables and given/known data

    Fiction provides the force needed for a car to travel around a flat, circular race track. What is the maximum speed at which a car can safely travel if the radius of the track is 80 meters, and the coefficient of friction is .40?

    2. Relevant equations

    Absolutely no clue!

    3. The attempt at a solution

    I really attempted this problem but came up with nothing worth putting in here. Please help!
  2. jcsd
  3. Nov 17, 2008 #2


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    Science Advisor
    Homework Helper

    fictitious force

    Hi glindawantsme! :smile:
    That's exactly why centrifugal force is called a fictitious force! :biggrin:
    Hint: start by calculating the centripetal acceleration at speed v.

    Show us what you get, and where you're stuck, and then we'll know how to help. :wink:
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