The lumped-parameter model of Figure 9.38, is defined by the chassis mass m and moment of inertia J as well as by two damper-spring suspensions. Determine the system’s number of DOFs and plot its...

The lumped-parameter model of Figure 9.38, is defined by the chassis mass m and moment of inertia J as well as by two damper-spring suspensions. Determine the system’s number of DOFs and plot its steady-state frequency response. Also calculate and plot the steady-state time response of the system when u1 = 0.05 sin(2t) m, u2 = 0.05 sin(2t - r/10), m = 1 kg, J = 0.01 kg-m2 , c1 = 0.4 N-s/m, c2 = 0.6 N-s/m, k1 = 100 N/m, k2 = 160 N/m, l1 = 1 m, and l2 = 2 m.