(Solved):
(1.23 Find the equivalent spring constant and equivalent mass of the system shown in Fig. 1.79 ...
(1.23 Find the equivalent spring constant and equivalent mass of the system shown in Fig. 1.79 ? with references to \( \theta \). Assume that the bars \( A O B \) and \( C D \) are rigid with negligible mass.
\( -\quad-\operatorname{ar}-\cdots \quad-\cdots- \)