Consider the spring-mass system depicted in Figure AP8.6. Develop a transfer function model to describe the motion of the mass M = 2 kg, when the input is u(t) and the output is x(t). Assume that the initial conditions are .x(0) = 0 and 
(0) = 0. Determine values of k and b such that the maximum steady-state response of the system to a sinusoidal input u(t) = sin(ωt) is less than 1 for all ω. For the values you selected for k and b, what is the frequency at which the peak response occurs?
