1. The problem statement, all variables and given/known data A 1200 kg car rounds a curve of radius 67 m banked at an angle of 12 degrees. If the car is traveling at 95 km/hr, will a friction force be required? If so how much and in what direction? 2. Relevant equations F=ma a=v2/r 3. The attempt at a solution I don't know what I'm doing wrong with this problem. These are the two equations I have from them and when I try to solve I either get a huge number or a negative. Ncos[tex]\theta[/tex]-Ffrsin[tex]\theta[/tex]-mg=0 Nsin[tex]\theta[/tex]+Ffrcos[tex]\theta[/tex]=ma I'm positive that it needs friction force and I think it is in the direction of the center of curve, but I haven't figured out a way to solve. Can someone please help?