Consider the five$-$truss assemblage shown in Figure $3$a$.$ Assume the rigid vertical bars at nodes $2$ and $3$ connecting the truss elements remain vertical at all times but are free to move left or right. All displacements are restricted to the X direction and the problem can be treated as $1$D$.$ Create the global stiffness matrix and show that with only the applied load shown $($no displacement boundary conditions$),$ that this problem cannot be solved using the finite element method.