Hamilton's equations for double pendulum

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SUMMARY

The discussion centers on the Hamilton's equations for simulating a double pendulum, specifically addressing a potential typo in the equations found on the Wolfram ScienceWorld website. The user inquires about the variables P1 and P2, questioning whether they should be Pθ1 and Pθ2 instead. The consensus among participants confirms that the original notation is indeed a typographical error, and the correct variables should be Pθ1 and Pθ2 for accurate simulation.

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Daniel1992
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At the bottom of the following website are the 4 equations that I am using for a double pendulum simulation.

http://scienceworld.wolfram.com/physics/DoublePendulum.html

The equation for C2 has the variables P1 and P2 and I can't work out what they are.:confused:

Is it a typo and they are meant to be Pθ1 and Pθ2?

Any help would be much appreciated.
 
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Daniel1992 said:
Is it a typo and they are meant to be Pθ1 and Pθ2?

Yes.
 

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