....can be an important step,so to imagine a possible PM.
Again,at: www.msu.edu/user/brechtjo/physics/atwood/atwood.html you can find a "play-ground" address ,to understand so easy the value of the time factor ,for a torque avalanche ,in a gravity fall evolution.
All that we need :
-to replace,in the torque relation,the mass difference with the arm difference
-to imagine "something"...a cyclical,self-turning scheme
-to "recognize" the specific task,function of the rotational inertia/flywheel/heavy hub/massive "pulley"...as in the "Atwood Machine with a heavy pulley" ,this evolution of an old physics lab-demo,into a new smartly intuition, on net
All the best! / Alex
.....if we start with a well known concept , at http://physicsphunhouse.com/physletbank_files/image036.png
...and play a possible (self...). variable/oscillatory leverage with a Class 2-3 lever arrangement , at :
www.geocities.ws/iacob_alex/Some_Drafts/text036.jpg
Al_ex