Answer Happy

1. In the system shown below, a bar of mass m is supported by two springs of stiffness k. Choose positive coordinates x and measured from the equilibrium position for the upward displacement and counterclockwise rotation of the center of mass C. (Note the mass moment of inertia of the bar about its center of mass is) = ml) a. Obtain the equations of motion in matrix format. 12 Set k=2.828 N/m, mu6 kg, l-1 m for parts b and c: b. Determine the natural frequencies and mode shapes (eigenvectors). c. If an upward force F(t) 30efart Nis applied to the center of rhass, determine the steady-state displacement and rotation angle response. 9 T Ik с اند