.....can be a simple change,of an old design:the counterweight trebuchet.
Some information at: http://en.wikipedia.org/wiki/Trebuchet
Can we turn,vary the original design into a gravity powered motor ("peace" machine)?
Try to take an attentive watching at a short movie :
www.youtube.com/watch?v=YgWfq0Q4WE8
Here,the interesting point is related to the top position:the short arm changes into a long arm,due to inertia,with no additional contrivance.
If we replace the purpose of a counterweight trebuchet...to throw out projectiles,with to "push,change" short arm into a long arm,due to inertia, can we imagine a slightly modified design?!
All the best! / Alex
All the best! /Alex
.....if we make a simple test , starting with a "modified" trebuchet , as :
https://www.geocities.ws/iacob_alex/Some_Drafts/text048.jpg
.....but playing the hinged (yellow) fixed arm , as a variable one ( we attach a spring ) , as :
https://youtu.be/z6_NRNw88Jw
Al_ex