A vibrational system modelled as a 1DOF system with a natural frequency of 3 rad/s, damping ratio of 0.2 and mass of 3 kg is subjected to a unity harmonic force with excitation frequencies between 0.1 and 15 rad/s. Determine the maximum amplitude of the steady-state response. The design requirements are that the amplitude of the response should be always lower that 0.09 m.