car turning

Fire Slayer

1. The problem statement, all variables and given/known data
When you take your 1100-kg car out for a spin, you go around a corner of radius 55m with a speed of 15m/s. Assuming your car doesn't skid, what is the force exerted on it by static friciton?


2. Relevant equations
f[tex]_{}c[/tex]=ma[tex]_{}c[/tex]
f[tex]_{}c[/tex]=mv[tex]^{}2[/tex]/r
[tex]\sumf=ma[/tex]

3. The attempt at a solution
[tex]\sum[/tex]f=ma
f[tex]_{}s[/tex]=mv[tex]^{}2[/tex]/r
f[tex]_{}s[/tex]=300

300=[tex]\mu[/tex][tex]_{}s[/tex]mg
300=[tex]\mu[/tex][tex]_{}s[/tex](1100)(908)
[tex]\mu_{}s[/tex]=0.027

but apparantley it's supposed to be 4.5
what happened?

learningphysics

How did you get 300?

And why are you calculating the coefficient of friction? The question only asks for the force.