#2924: Pendulum Types explain

[Four types of pendulums are shown in a single panel. Each has a bullet list below the depiction.]

[Label:]

Simple pendulum

[A basic pendulum consisting of a joint, rod, and weight swinging in a regular arc]

* Periodic

* Stable

* Useful for timekeeping

[Label:]

Double pendulum

[A pendulum consisting of 2 joints, 2 rods, and a weight swinging in a more loopy arc]

* Aperiodic

* Chaotic

* Moderately cursed

[Label:]

Inverted pendulum

[An upside-down basic pendulum with some apparatus underneath vibrating up and down]

* Finely balanced

* Unstable

* Becomes stable when vibrated

[Label:]

Nightmare pendulum

[An inverted double pendulum, with an additional uninverted pendulum swinging within a large weight adorned with archaic/mystical symbols]

* Forbidden

* Unphysical

* Summons Maxwell’s Demon