Consider a machine of mass 70 kg mounted to ground through an isolation system of total stiffness 30,000 n> m, with a measured damping ratio of 0.2. the machine produces a harmonic force of 450 n at 13 rad> s during steady-state operating conditions. determine (a) the amplitude of motion of the machine, (b) the phase shift of the motion (with respect to a zero phase exciting force), (c) the transmissibility ratio, (d) the maximum dynamic force transmitted to the floor, and (e) the maximum velocity of the machine.