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Physics Home Work, Please Help

  1. Dec 1, 2008 #1
    1. The problem statement, all variables and given/known data
    Here is the question with the below four answers, which one is it???
    In order to calculate the coefficient of friction what must be true about the motion of object?

    As long as the object is moving at constant speed it does not matter what that speed is.
    The object should be accelerating at a constant rate.
    It should be moving at its minimum constant speed (as slow as it can go).
    The object should be accelerating at its minimum rate.

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Dec 1, 2008 #2


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    Based on what you know about kinetic friction, explain why you think each of these choices are either true or false.
  4. Dec 1, 2008 #3
    The objects net force has to be known, also if the object is not accelerating then there is no net force on the object so the coefficient of friction would be equal to the force pushing the object.
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