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Coefficient of Kinetic Friction

  1. Jan 29, 2014 #1
    1. The problem statement, all variables and given/known data

    A crate of bananas has an initial speed of 4.2 m/s2. It slides across a floor, traveling 6.0m before coming to a stop. Find the coefficient of kinetic friction between the crate and the floor.

    2. Relevant equations
    Fnet=ma
    v2=v02+2aΔx



    3. The attempt at a solution

    v=4.2 m/s
    x=6.0 m
    vf=0
    Δx=6.0 m

    a=v2-v02/2x
    a=0-17.64 m/s2/12 m = 1.47m/s2
    [itex]M[/itex]N=ma
    mg=a
    mg=a/g
    m=1.47 m/s2/9.8m/s2=.15

    For a final answer of .15. This seems correct to me, but could someone please confirm?

    Sorry about the doubled template, I don't know how to get rid of it without messing up my post! Any ideas? :smile:

    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Jan 29, 2014 #2

    CWatters

    User Avatar
    Science Advisor
    Homework Helper

    Looks fine to me.
     
  4. Jan 29, 2014 #3
    Thank you!
     
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