A 9-kg mass is attached to a spring hanging from the ceiling and allowed to come to rest. Assume that the springconstant is 40 N/m and the damping constant is 4 N-sec/m. At time t=0, an external force of 6 sin 3t cos 3t N is appliedto the system. Determine the amplitude and frequency of the steady-state solution.Using g =9.8 m/sec², the equilibrium displacement of the mass is 2.205 m.(Type an integer or a decimal.)The amplitude ism.(Round to four decimal places as needed.)The frequency is Hz.(Type an exact answer, using as needed.)

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