Nonlinearity Affects a Pendulum

2 comments

• vi_sextus_vi 1 hour ago
  Hmmm I thought the closed form solutions are Jacobi elliptics?

  https://cococubed.com/code_pages/pendulum.shtml
• efavdb 31 minutes ago
  Never saw that AGM expression for K0 before in the earlier linked post. Nor had I heard of the AGM, very cool.