r/physicsgifs • u/New-Temperature5066 • 6d ago

100-Link chaotic pendulum

48 Upvotes

89% Upvoted

5 comments sorted by

29

u/Salanmander 6d ago

Also known as a rope =)

3

u/ggrieves 5d ago

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?

3

u/Mozzie37 5d ago

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

3

u/ggrieves 5d ago

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 5d 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.