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Question: a metal bar with a spring attached to it vibrates...

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A metal bar with a spring attached to it vibrates about the pivot O, and has a mass m. The mass moment of inertia of the bar is given as mL 12 (a). Make as many assumptions as you can (b). Sketch an FBD of the bar. (c). Sketch an Inertia Diagram (ID) of the bar.
(c). Sketch an Inertia Diagram (ID) of the bar. (d). Derive the Equation of Motion (EOM) for the bar.
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