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I want to calculate the movement of the rod in the picture, but I don't know how to put up the Lagrangian for the problem.

I have the Shear modulus, [tex]\mu[/tex], for the material and M>>m and [tex]\theta = 0[/tex]. I need the Lagrangian and from there on I think I can manage with the calculations myself.

Thanks

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# Homework Help: Lagrangian mechanics

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