1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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

    User Avatar
    Science Advisor
    Homework Helper

    Your approach sounds ok to me. Provided you didn't just use F from F=MA.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook