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Homework Help: Coefficient of Static Friction Problem

  1. Dec 2, 2007 #1
    [SOLVED] Coefficient of Static Friction Problem

    1. The problem statement, all variables and given/known data
    A baseball player with mass m = 73 kg, sliding into second base, is retarded by a frictional force of magnitude 460 N. What is the coefficient of kinetic friction µk between the player and the ground?



    2. Relevant equations
    force of kinetic friction
    f(k)=[tex]\mu[/tex](k) N



    3. The attempt at a solution
    This is a homework question given by our teacher during finals week, however he failed to go over this subject this semester and I do not have any references in my notes. The book I am using (College Pysics, 2nd ed., Giambattista) goes over this subject but is very unclear on how to solve this type of problem. Any help will be appreciated, thanks!
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  2. jcsd
  3. Dec 2, 2007 #2
    Frictional force = coefficient of friction * normal force
    Fn = mg = 73 * 9.8 = 715.4 N
    Ff = 460 N
    460 N = uk * 715.4 N

    uk = .64
     
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