1. The problem statement, all variables and given/known data At what angle should the roadway on a curve with a 50 m radius be banked to allow cars to negotiate the curve at 12 m/s even if the roadway is frictionless? a. 0° b. 12.2° c. 17.1° d. 35.0° e. 73.2° 2. Relevant equations β=arctan(v^2/r*g) 3. The attempt at a solution im using β=arctan(v^2/r*g) but the key says the answer is b? can anyone help me figure out why its not 16.4??