Figure 1.76 shows a uniform rigid bar of mass (m) that is pivoted at point (O) and

Question:

Figure 1.76 shows a uniform rigid bar of mass $m$ that is pivoted at point $O$ and connected by springs of stiffnesses $k_{1}$ and $k_{2}$. Considering a small angular displacement $\theta$ of the rigid bar about the point $O$, determine the equivalent spring constant associated with the restoring moment.

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