2 - Use modal analysis to find the steady-state displacement of each mass when F1=4t and F2=0 for two degree of freedom system shown in Figure Q3 where: m1=4kgm2=2kgk1=k2=0.5kN/m3=k4=1kN/m The natural frequencies and corresponding mode shapes are: 1=7.210rad/s{X}1={10.490}2=11.410rad/s{X}2={10.740}