Author Topic: "Walking" around a fulcrum... (Read 2233 times)

iacob alex · « **on:** October 28, 2020, 09:32:48 PM »

..... is a metaphor related to a continuous rotating mass-spring system with a central support/fulcrum.
Let's start with the human inverted pendulum ( mechanical equivalent...) , walking on a horizontal surface , at :
https://vimeo.com/34891251
https://bio.biologists.org/content/8/6/bio043695?rss=1
.....then skating on a half-pipe ( concave surface ) , at :
https://nickdrachman.wordpress.com/2020/03/26/the-physics-of-vert-skating/
https://mpora.com/skateboarding/half-pipe-physics-science-skateparks/
.....an a possible full rotating ( not swinging...) mass-spring system , as :
https://youtu.be/z6_NRNw88Jw
but this time , as a "self" motion/spinning arm , due to gravity free fall and rotational inertia ( "pumping" spring )!?
The essence is the sliding mass and the "working" spring...or inertia "assisted" gravity.
Al_ex

iacob alex · « **Reply #1 on:** June 14, 2021, 11:07:35 PM »

.....if we start with a lot of theory (how to pump a swing...) ,at :
http://audiophile.tam.cornell.edu/randpdf/swing.pdf
.....but we play it with :
https://youtu.be/z6_NRNw88Jw
.....initiated at the horizontal line.
Have we a self-accelerated “game” (lab-demo) ? !
Nothing more then a minor “substitution” : the human actor ( elastic “body”...) with a spring-sliding mass ( variable pendulum)...or a “minimized robot”.

All the Best! / Al_ex

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Author Topic: "Walking" around a fulcrum... (Read 2233 times)

iacob alex

"Walking" around a fulcrum...

iacob alex

Re: "Walking" around a fulcrum...