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Statement of a problem № 3433

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A double pendulum consists of two simple pendulums of lengths l1 and l2 and masses m1 and m2 , with the cord of one pendulum attached to the bob of another pendulum whose cord is fixed to a pivot, Fig. 7.1. Determine the equations of motion for small angle oscillations using Lagrange's equations.

Solution:
A double pendulum consists of two simple pendulums of lengths l1  and l2 and mas

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