NTNUJAVA Virtual Physics Laboratory
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"That their main business was not put into the mind knowledge which was not there before, but to turn the mind's eye towards light so that it might see for itself." ...Plato's advice to educators(429-347BC)
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Author Topic: Driven pendulum (forced oscillation)  (Read 7241 times)
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Fu-Kwun Hwang
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on: April 24, 2010, 02:48:14 pm » posted from:Taipei,T\'ai-pei,Taiwan

There are three springs all driven by external force with different frequency.
The resonance frequency is determined by \omega_0=\sqrt{k/m} where k is the spring constant, m is the mass (k,m can be adjusted with slider). 
When sync check box is checked:
The driven frequency for left spring is ratio*w_0,
The driven frequency for center spring is w_0,
The driven frequency for right spring is ratio/w_0.

You can find the phase between oscillation and external force.
A damping force is introduced to prevent the amplitude become infinity.

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