Assuming small amplitudes set up the differential equations


Assuming small amplitudes, set up the differential equations of motion for the double pendulum using the coordinates shown in Figure.

Show that the natural frequencies of the system are given by the equation

ω=[√(g/t)(2±√2)]

1437_amplitudes.jpg

Determine the ratio of amplitudes X1/X2 and locate the nodes for the two modes of vibration.

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Physics: Assuming small amplitudes set up the differential equations
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