(a) Two of the eigenvectors of a vibrating system are known to be Prove that these are...
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(a) Two of the eigenvectors of a vibrating system are known to be
Prove that these are orthogonal with respect to the mass matrix
\[[m]=\left[\begin{array}{lll}1 & 0 & 0 \\0 & 2 & 0 \\0 & 0 & 3\end{array}\right]\]
Find the remaining \([\mathrm{m}]\)-orthogonal eigenvector.
(b) If the stiffness matrix of the system is given by
\[\left[\begin{array}{rrr}6 & -4 & 0 \\-4 & 10 & 0 \\0 & 0 & 6\end{array}\right]\]
determine all the natural frequencies of the system, using the eigenvectors of part (a).
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