1. The problem statement, all variables and given/known data Hello there, this is my first thread here ! I've been trying to solve an exercise from my statics course and just couldn't get anywhere. Basically it's a system of two springs connected by a rope, and each spring is attached to a cylinder (Both Cylinders have same mass). The question is on question number 2 in the attached file, it requires that we calculate the sag caused by the two cylinders when they weigh 40N each.(Stiffness has been already calculated from question #1) The attachment also views the lengths given by the problem Here's a thumbnail of the problem 2. Relevant equations Well it's equilibrium so no other equations than ΣF=0 Pythagorus in a right triangle Hook's law T=k∇ Some trigonometry.. 3. The attempt at a solution I managed to solve easily question #1, basically from the length given and the sag caused by the cylinders, I calculated both the unstretched and the final length of one of the springs. Then I calculated the tension in that cylinder in terms of k, did summation of forces on the y axis and managed to find the stiffness. But the problem is with the second question. Now First I calculated the displacement of the spring in terms of the sag s, the angles in terms of s (some pythagorus done there), then I applied equilibrium. Then I got to an equation involving only the unknown sag s but it was an equation of 4th degree so that sounded absurd.. Am I missing something here? Is there an easy way behind all the messy calculation that should be done here ?