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Homework Help: I need to find the coefficient of the kinetic force and the kinetic force?

  1. Dec 6, 2007 #1
    1. The problem statement, all variables and given/known data
    a block is accelerating 2.31m/sec^2 horizontally. the block is .2485Kg. what is the coefficient of the kinetic force and the kinetic force?


    2. Relevant equations
    Normal force = weight = mg
    Fk= kinetic friction coefficient (┬Ákinetic) / normal force (Fnormal)
    kinetic friction coefficient (┬Ákinetic) = kinetic friction * normal force (Fnormal)
    3. The attempt at a solution
    Fg= mg = .2485kg*9.8m/sec^2 = 2.4353N = normal force
     
  2. jcsd
  3. Dec 7, 2007 #2
    Try writing an F=ma equation for the x-direction. This should give you an equation for the frictional force and since you have already solved for the normal force you should be able to solve for both the coefficient of kinetic friction and the total frictional force.
     
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