1. The problem statement, all variables and given/known data To test the performance of its tires, a car travels along a perfectly flat (no banking) circular track of radius 412 m. The car increases its speed at uniform rate of, at= 4.14m/s^2, until the tires start to skid. If the tires start to skid when the car reaches a speed of 37.7 m/s, what is the coefficient of static friction between the tires and the road? The acceleration of gravity is 9.8 m/s2. 2. Relevant equations u(s)=(V^2)/(r*g) 3. The attempt at a solution I believe the above equation is the one I am supposed to be using. I simply rearranged the equation to solve for Vmax to solve for the static coefficient. I have no idea why I need the tangential acceleration and I believe that 37.7 is the maximum velocity.