Exercise $2$

a$)$ For the structure below compute free displacements, reaction forces, and draw the diagrams of the internal forces by means of the direct stiffness method $($please provide the full description$)$;

b$)$ Verify the solution by using a FEM code such as Straus$7$;

$E=210$GPa $(steel)$

$L=3m$

$q=2K\frac{N}{m}$

cross$-$section of beams $AB,BC$ :