Play Atwood Machine...

[iacob alex]

....with a heavy pulley (see this old topic),as a basic starting design and imagine a transposition,with a different "key"  (lever),as in a musical text ,if you intend to perform a self-repetitive motion due to the interplay between gravity and inertia ( torque difference on the same side of the fulcrum).

   Heavy pulley becomes simply,a centered mass  (see the old "Heavy hub pendulum " topic)...an in-ex energy storage flywheel.

   The string becomes a single length variable arm of the lever...the other is constant.

   Regarding the additional small mass (Atwood Machine has equal arms)...this is missing ("redundant"),because the intended unbalance due to mass difference,is becoming an unbalance due to an arm difference/oscillation,with constant masses.

   All the best! / Alex

[iacob alex]

.....with a massive pulley at:   www.msu.edu/user/brechtjo/physics/atwood/atwood.html

     The new idea,of a massive pulley  and  the next one (replace the string with a lever )can help us to think about a possible gravity motor?!

        All the best! / Alex

[rupak447]

.....with a massive pulley at:   www.msu.edu/user/brechtjo/physics/atwood/atwood.html

     The new idea,of a massive pulley  and  the next one (replace the string with a lever )can help us to think about a possible gravity motor?!

        All the best! / Alex

Hm, it seems like an idea having the proof.

[iacob alex]

.....with a pulley (two equal arms,two unequal masses),then,play the differential pulley (two unequal arms,two equal masses).

      It can help you to imagine a final move,to a possible gravity motor,if you realize a self-leverage ,due to gravity-inertia interplay...

         All the best! / Alex

[iacob alex]

......as : http://spiff.rit.edu/classes/phys369/workshops/w4r/atwood_diagram.gif
   ...but replace the gravity unbalance due to mass difference , with the reaction difference of a simply supported beam , due to a moving support , at :
             www.geocities.ws/iacob_alex/Some_Drafts/text032.jpg


       Al_ex