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Kinetic Frictional Force

  1. Jan 22, 2017 #1
    The alarm at a fire station rings and a 71.3-kg fireman, starting from rest, slides down a pole to the floor below (a distance of 3.63 m). Just before landing, his speed is 1.42 m/s. What is the magnitude of the kinetic frictional force exerted on the fireman as he slides down the pole?

    So Givens:
    m = 71.3 kg
    d = 3.63 m
    Vf = 1.42 m/s
    g = 9.8 m/s^2

    a = Fnet/m
    Ff = (coefficient of friction)(Fn)

    I have absolutely no clue how to start this problem.
    please help!
  2. jcsd
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