Stable or Unstable Equilibrium Walter Lewin Lecture

[@EarthmanJim]

Feels like we're at a historical unstable equilibrium.

[@GaryBrian-rm8kt]

Well over my head but very interesting

[@krishvlog703]

Nice

[@FrankTichenor-o7o]

Anything over 1: equivalent to answer; within fractions

[@prateek3167]

❤

[@Hans_Magnusson]

And the second derivative is totally not the same at both points…!