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Homework Help: Calculating the coefficient of kinetic friction

  1. Oct 4, 2012 #1
    1. The problem statement, all variables and given/known data
    This was a lab. We attached a weight to a pulley and connected it to a wooden block. the wooden block was placed on a wooden board on a table. we dropped the weight and calculated the time it to the block to travel a certain distance.We have the variables
    T=1.28 s
    Mass of wooden block=.243 kg
    Mass of weight on pulley=.110 kg
    d=.5 m
    2. Relevant equations
    D=vitf+1/2atf^2
    F=ma
    Force of kinetic friction=coefficient of kinetic friction times normal force

    3. The attempt at a solution
    I solved for acceleration and used that to solve for the coefficient. I'm sure that's wrong
     
  2. jcsd
  3. Oct 5, 2012 #2

    CWatters

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    Your approach sounds ok to me. Provided you didn't just use F from F=MA.
     
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