1. The problem statement, all variables and given/known data http://img85.imageshack.us/img85/6346/missrd.jpg [Broken] Across the axis of a steel rod act 3 forces: F1 = 80 kN F2 = 50 kN F3 = 30 kN Crossection area of rod = 4cm2 What are the forces that are being made a the different parts of the rod, and what will be it's overall lengthening? Describe the course of the axial forces and the stresses through the rod.. measurements are given in cm. E = 2 x 105 (the answers are in the screenshot above) 2. Relevant equations [PLAIN]http://img831.imageshack.us/img831/533/neededformulas.jpg[b] [Broken] 3. The attempt at a solution[/b] http://img840.imageshack.us/img840/6550/solutionto.jpg [Broken] From some reason I'm getting different answers than given...but why?