1. The problem statement, all variables and given/known data I have beam supported in three points (one of the support is spring) . What i know: PR = 100kN/m spring constant Z = 10kN/m I have to calculate bending moments and shear forces in points A, B and Z. 2. Relevant equations ΣM = 0 ΣF = 0 Spring force : Fz=-zx This is not enoug to solve the problem. I have two equations and three unknowns (VA, VB, and x) 3. The attempt at a solution I was thinking about finding deflection of the beam in point Z however the shape of the beam between points Z and A is quite complicated. Maybe there is some simpler method and I can't see? I will be very gratefull for help/hint with that!