Nutation, torque free precession; an intuitive explanation

Описание: This is my explanation of the logicality of the motion of nutation/torque free precession in symmetrical rigid bodies spinning about the symmetry axis.
It is mainly a visual analysis, almost without algebra.

A few further readings:

http://butikov.faculty.ifmo.ru/Applet...
https://www.feynmanlectures.caltech.e...
http://butikov.faculty.ifmo.ru/Applet...

How to measure/calculate moment of inertia and energy in a spinning top:
   • How to measure/calculate moment of inertia...  


Music:

Truth in the Stones by Kevin MacLeod
Link: https://incompetech.filmmusic.io/song...
License: https://filmmusic.io/standard-license

River Fire by Kevin MacLeod
Link: https://incompetech.filmmusic.io/song...
License: https://filmmusic.io/standard-license

Spirit of the Girl by Kevin MacLeod
Link: https://incompetech.filmmusic.io/song...
License: https://filmmusic.io/standard-license

Healing by Kevin MacLeod
Link: https://incompetech.filmmusic.io/song...
License: https://filmmusic.io/standard-license

River Flute by Kevin MacLeod
Link: https://incompetech.filmmusic.io/song...
License: https://filmmusic.io/standard-license

Photos:

"Heavens", Photo by Alexander Andrews on Unsplash
https://unsplash.com/photos/fsH1KjbdjE8
"Pleiades", Photo by Bryan Goff on Unsplash
https://unsplash.com/photos/TElAqYMiAME
"Eagle nebula", Photo by Aldebaran S on Unsplash
https://unsplash.com/photos/_aZUDe5-0TM
"Milky way", Photo by Rob Musson on Unsplash
https://unsplash.com/photos/hQD6vVNU55M
"Horse head nebula", Photo by Bryan Goff on Unsplash
https://unsplash.com/photos/_itkYVtDh8w
"Helix nebula", Photo by Guillermo Ferla on Unsplash
https://unsplash.com/photos/QTnOhxGJZkk
"Iris nebula", Photo by Guillermo Ferla on Unsplash
https://unsplash.com/photos/P8gh-GR0dDs