Bank curve with friction

1. Nov 6, 2008

nns91

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

$$\Sigma$$ 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. Nov 6, 2008

LowlyPion

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?

3. Nov 6, 2008

nns91

Thanks. I got it.