German wheel...

[iacob alex]

.....as an amazing show , at : https://youtu.be/I5B9LbTX4us
.....and as a possible surprise ( continuous self rotation...) , if we replace the performer with a diameter ( spring-mass-spring) , as :
https://www.britannica.com/science/spring-force
If we add the inclined plane to the physics of:
https://youtu.be/dkPX8Ce0jIk
.....we have the description of a potential cyclical motion.
Al_ex