The hinge between the two members of the following beam is replaced with a rational spring with a stiffness �" = ��/� , where � = 20 ft = 240 in . 1) Use hand calculation to determine the joint displacements, member forces and support reactions; 2) Re-do the problem using computer program for the hinge connection; 3) Re-do the problem using computer program for the rigid connection; 4) Discuss the results.