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Homework Help: Frictional Force on Brake shoe

  1. Dec 8, 2009 #1
    1. The problem statement, all variables and given/known data
    A hydraulic brake system is shown. The area of the piston in the master cylinder is
    6.35 cm2, and the area of the piston in the brake cylinder is 1.72 cm2. The coefficient of
    kinetic friction between the brake shoe and the wheel drum is 0.453. How large is the frictional force between the brake shoe and the wheel drum when a force
    of 46 N is exerted on the pedal? Answer in units of N.

    2. Relevant equations

    3. The attempt at a solution
    I can't even figure out where to start on this one. Noo equations or anything. Please Help Me start this one.
  2. jcsd
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