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Coefficient of Friction

  1. Apr 5, 2008 #1
    1. The problem statement, all variables and given/known data

    I just did a lab at school dealing with coefficient of friction for an object on an incline. After all my calculations done, my answer is negative for a cart sliding down, dealing with kinetic friction.

    2. Relevant equations



    3. The attempt at a solution

    I have checked all my calculations and have found nothing wrong.
     
  2. jcsd
  3. Apr 5, 2008 #2

    PhanthomJay

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    Well how can we help unless you show us your calcs??
     
  4. Apr 5, 2008 #3
    My question is whether the coefficient of friction can be negative?
     
  5. Apr 5, 2008 #4

    PhanthomJay

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    Oh, no.
     
  6. Apr 5, 2008 #5
    Did you turn the ramp around so the angle was in the 2nd quadrant?
     
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