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Car skidding

  1. Oct 17, 2015 #1
    1. The problem statement, all variables and given/known data
    This isn't a problem from a textbook or homework but just a general question.

    Say there's a car traveling in a circle and that the track has some coefficient of kinetic friction µ. What would make the car skid?

    2. Relevant equations


    3. The attempt at a solution
    I'm thinking that it skids when the centripetal is greater than the friction force? Not sure why but that's just my intuition.
     
  2. jcsd
  3. Oct 17, 2015 #2

    PhanthomJay

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    If it is a level unbanked road, the centripetal force is the static friction force. What does that tell you about when the car will skid?
     
  4. Oct 17, 2015 #3
    That actually makes sense because on a level curve the friction and centripetal forces are the only ones pointing to the center.

    Then I suppose it would be when the velocity of the car is greater than [itex]\sqrt{µgr}[/itex]?
     
  5. Oct 17, 2015 #4

    PhanthomJay

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    the friction force is the centripetal force.
    yes, where u is the coefficient of static friction, not kinetic friction.
     
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