A ring of negligible size is subjected to vertical force P. Determine the required length l of the cord AC such that tension acting in AC is TAC. Also, what is the force acting in cord AB? P = 300N, d = 0.2m (distance between A & B), angle ABC = 45 degrees, TAC = 250N The graph basically looks like a "Y" with C & B at the tops, A at the centre and P the downward force. Fx = 0; Fab(cos45) - 250cosx = 0 Fy = 0; Fab(sin45) + 250sinx - 300 = 0 Fab = (250cosx/cos45) (250cosx/cos45)sin45 + 250sinx - 300 = 0 This is about as far as I get before I start mucking it up. Can some one help me through the steps to solve for "x" so I can eventually find l?