A second-order mechanical system has the transfer function

G(s)= 1/0.15s² + 1.4s + 126 = Y(s)/U(s)

The system is initially at rest when a step-input force u(t)=5U(t) Nis applied. Here, U(t) represent the unit step function.

Show that the transient response will oscillate before reaching a steady-state response.