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Problem One Using Sheet 1 of the Excel spreadsheet provided below, consider the spring assemblage
system shown. Wk4_Natural Frequencies & Mode Shapes.xlsx A. What is its degree of freedom
(DOF)? B. Write the equation of motion (EOM)? C. Obtain the global mass matrix D. Obtain... 

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A B C D E F G H K L M N O N m= 2 kg K1 = 10 N/m IN O 30 -20 Mass Matrix M = Stiffness Matrix K = W
m, = 5 kg K2 = 20 N/m 0 5 -20 25 4 K3 = 5 N/m Eigenvalue equation al + bl + c = 0 a = 10 b = -200 C =
350 (rad/s) 2 w ( rad/s) f(Hz) Eigen- A 1 = 1.937742 Natural w 1 (f1) = 1.392028 0.221548 10...