Double Pendulum using Python

in this video we gonna make a simulation of a double pendulum example using pygame python

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"Sappheiros - Memories" is under a Creative Commons license (CC-BY).

"Escape by Sappheiros" is under a Creative Commons license (CC BY 3.0)

[ayanarif]

Why does the motion gets slower and slower.... Have you added any damping or is it because memory is getting larger, anyway thanks for sharing

[kubatkaczyk]

Is there any way to speed it up? For example somehow save the painted picture and just add pixels to it after the pendulum moves and print the pendulum on that

[abhaykshirsagar]

The most annoying thing about pygame is that you can't define location in float it has to be int.

[nfast]

Really cool video. But there is a problem in the Code: if the mass of the pendulum is set very low the angle becomes infinite after some time. the sin function can't take infinite and throws an error. Any idea on how to fix it?

[IlValentino]

not quite sure how valid your physical approach is here since you are adding variables with different units, it would only make sense if you assume increments of 1 time unit so it's multiplicative neutral but then this wouldn't fit your fps compared to real life assuming SI units, also this is basically eulers method, right? the method is already quite ineffcient, so such a big time step leads quickly to false results

[ghbmkukkk]

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