Pendulum driven by combination of horizontal and vertical excitation

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Diablo
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Hello there,

Could some one help me to find equations of motions of this problem attached to this message?

thanks a lot

Niko
 

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Diablo said:
Hello there,
Could some one help me to find equations of motions of this problem attached to this message?

The technical name of that setup is a parametrically driven pendulum. The suspension point moves up and slightly, in a sinusoidal pattern. When the driving frequency is an exact match for the natural frequency of the pendulum the drive will sustain the pendulum oscillation.

A team of millersville University has build several small Foucault pendulums with parametric drive. See their "[URL discussion[/URL] of equations of motion for a parametrically driven pendulum..

Cleonis
 
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