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Banked curve in a rear engine car

  1. Feb 10, 2009 #1
    This is for a vehicle dynamics class; it is more than just a banked curve problem. Im not sure what we have to calculate...the professor never went over this.

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

    A Porsche 911 is traveling around a circular track of diameter 400m at a constant 30 m/s without using any steering. Due to what should have been an obvious engineering error, the engine in the Porsche is placed behind the rear wheels. Assume 60 % of the vehicles weight is on the rear tires. Assume the vehicles mass is 1000 kg, its wheelbase is 2.2 meters, and the cornering stiffness of the tires is 10,000N/rad. What angle is the track banked at?

    2. Relevant equations

    not sure....

    3. The attempt at a solution

    well I thing that the force on the outer front and back wheel will be more than the force on the inner two wheels. so the back outer tire will have the most force on it.

    I really have no idea where to go. Id appreciate any help.

  2. jcsd
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