1. The problem statement, all variables and given/known data http://imageshack.us/photo/my-images/266/problembd.jpg/ 2. Relevant equations F=mv^2/c 3. The attempt at a solution I drew the free body diagram and found TSin(theta) = mv^2/r r = LSin(theta) TSin(theta) = mv^2/LSin(theta) In the y direction Fy = mg - TCos(theta) = 0 So mg = TCos(theta) I tried to turn T = mg/cos(theta) into T=mg/(1-Sin(theta)) and sub it in but it doesn't seem to work. Any help would be appreciated!