$2\mathrm{.}8-2\mathrm{.}16.$ For the spring assemblages shown in Figures P$2-8,$ P$2-9,$ P$2-10,$ P$2-11,$ P$2-12,$ P$2-13,$ P$2-14,$

P$2-15,$ P$2-16,$ determine the nodal displacements, the forces in each element, and the

reactions. Use the direct stiffness method for all problems.

Figure P$2-8$