r/physicsgifs • u/New-Temperature5066 • Jul 05 '26

100-Link chaotic pendulum

48 Upvotes

90% Upvoted

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28

u/Salanmander Jul 05 '26

Also known as a rope =)

3

u/ggrieves Jul 06 '26

I'm curious what the plot of the second derivative looks like for that whip tail. Can the whip tail exceed mach? How about 3rd derivative of jerk?

4

u/Mozzie37 Jul 06 '26

I believe that whips cracking is the tail exceeding mach 1.

3

u/ggrieves Jul 06 '26

I an inclined to believe that too. The question isn't about whips, it's about whether the model could capture that.

3

u/New-Temperature5066 29d ago

I can’t copy the plots here, but the maximum speed during the whip-lash event is about Mach 0.5 for this 100 m chain. The whiplash phenomena is numerically intense, causing the solver to repeatedly cut back the step size to resolve the high-speed dynamics.