The mass weighing 8 lbs is attached to the spring hanging from ceiling and comes to rest at the equilibruim position. At t=0, the external force F(t)=2cos(2t) lb is applied to the system. If spring constant is 10 lb/ft and damping constant is 1 lb-sec/ft,
i) Determine steady-state solution for system.
ii) Determine resonance force in system?