Consider the system shown in Fig. Note that a torque () acts on the rocker aim, a force f1(t) acts on the mass m1 while a force f2(t) acts on the mass m2. Find an equivalent single degree of freedom system in which the independent variable is x(t). a.Sketch your system. b.Express the equivalent values of mass, stiffness, damping and force in terms of the parameters of the original system. State the principle that you use in determining each equivalent parameter. c. What do we meanby a single degree of freedom