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Circular Motion of a car on a track

  1. Oct 24, 2007 #1
    [SOLVED] Circular Motion

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

    A 1500 kg car drives around a flat 200-m-diameter circular track at 25 m/s. What is the magnitude and direction of the net force on the car? What causes this force?

    2. Relevant equations

    [tex]F_c = \frac{mv^{2}}{r}[/tex]

    3. The attempt at a solution

    So I suppose the net force is the force that maintains the circular motion. Thus,

    [tex]F_{net} = \frac{(1500)(25)^{2}}{100} = 9375 N[/tex]

    However, how exactly would I get the direction of [itex]F_{net}[/itex]? Is it enough to say say towards the center?

    And was the cause of the net force the static frictional force of the car?

    Thanks in advance!
  2. jcsd
  3. Oct 24, 2007 #2


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    Right on all points.
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