A structure is composed of members AB and BC that are rigidly connected at B, as shown in Figure Q4. A uniformly distributed load of 20 kN/m acts on member AB. Flexural rigidity El is constant throughout. Axial deformation of all members can be neglected. Use the flexibility method to set up equations from which the unknowns can be calculated. Note that you are not required to calculate unknowns and the bending moment diagrams. A 20 kN/m V 3 m B 6 m Figure Q4 A C