1. The problem statement, all variables and given/known data A curve of radius r is banked at angle θ so that a car traveling with uniform speed v can round the curve without relying on friction to keep it from slipping to its left or right. The acceleration of gravity is 9.8 m/s2. If r = 50 m and v = 64 km/hr, what is θ? Answer in units of ◦. For this one, I drew a FBD. In my picture, Fny and Fg canceled each out, so the unbalanced force was Fnx. I used N2nd Fnet=ma and used components: Fnx=max Fnsintheta=max Fny= mg Fncostheta=mg then i divided them: Fsintheta max --------- = -------- Fcostheta mg The masses canceled out on the right and on the left I had tantheta. on the right, ax/g= v^2/rg When I plugged in numbers, I got theta= approx 90 degrees. However, when I submit this answer, it is wrong..could someone help me find out where I messed up?