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Homework Help: Bank curve with friction

  1. Nov 6, 2008 #1
    1. The problem statement, all variables and given/known data

    Radius 150m, angle is 10 degree, mass of the car 800kg, speed 85 km/h.

    Find the normal force on the tires exerted by the pavement. ( There is friction)

    2. Relevant equations

    [tex]\Sigma[/tex] F= m* v^2/r

    3. The attempt at a solution

    The friction makes it's so complicated. I know that Fn= mg/cos10 will not work.

    Can anyone help me ?
  2. jcsd
  3. Nov 6, 2008 #2


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    Homework Helper

    It's not that m*g*Cosθ doesn't work, it's just that there is a horizontal force from the angular motion that is acting as well.

    If there is a horizontal force, what is its component that is also normal to the incline?
  4. Nov 6, 2008 #3
    Thanks. I got it.
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