physics
posted by Kathryn .
A car goes around a curve on a road that is banked at an angle of 30.5 . Even though the road is slick, the car will stay on the road without any friction between its tires and the road when its speed is 19.0 .
What is the radius of the curve?

force up the hill=force down the hill
mv^2/r cos30.5=mg Sin30.5
solve for r. 
plugging everything in do I get 84.15? That seems a little high...

nvm. i got it. 84 was wrong... thanks for your help!

i get 62.536 when i do it. what is the answer

Smackdab what I was lokonig forâ€”ty!