Two sticks game...

[iacob alex]

...as I like to call Milkovic's  "Two Stage Mechanical Oscillator",in an elementary,formal language can be easy developed if we take into account his comments(see  his movie on youtube.com ).

When you go over step by step, on  a new path,every real pace is important:the story,the theory comes after.

Milkovic,in his last movie comments,considers his set-up as an inertial balance beam:gravity and inertia keep it moving.

He punctuates the necessity of a rigid structure basement:  the base of the main fulcrum/pivot ,that of the lever must be stable,so to avoid the dissipation("loss") of the "aroused" energy.

A strange fact is that he considers(and goes to show) his unusual, simple, mechanical arrangement  as an one way power mechanism...so as a temporary flow,a washing ,pulsating "river" if you like.

It seems that you can't take the power ,from this pulsing energy "spring"  in a "crank style",so the people think  about a  different manner(induction  via  an electromagnetic field).

Can it be a suggestion for a similitude,a kind of an inertial induction?

Maybe ,we are in the presence of a new phenomenon:the trajectory of the pendular mass(on a balanced,but free fulcrum/pivot) has such a shape (vis-a-vis the gravity reference frame/a potential flow),that asks for a certain reaction from the inertia:as we move  a closed circuit in a magnetic field,and get a pulsatory current, flow...remind   the begginings of the electricity,two hundreds years ago.

As Prof Milkovic said,the research is the only way  to learn something:we must run experiments,not simulations   on the screen.Why?Because the mathematical description is "time-out" this moment.

In my opinion,to find easy the "fit" size of the your own Milkovic's device replication,we can put on paper firstly(or in our mind...) two sticks/bars:one for the lever,one for the pendulum.

On them,you can slide the masses(one for the pendulum,one for the beam),so to find the critical/oscillating point of this arrangement,and than fix them.

Now,you can play and develop in your manner how to draw out power.

Pay attention,it's an addictive game: the curiosity can become a passion(as that of Milkovic...)for the mind,so take it easy.

       All the Bests!  /  Alex

[iacob alex]

    ...the most simple design(and test),you can see at   www.geocities.com/iacob_alex    ,then click on  "Some _Drafts"/UNTITLED)001.JPG.

     All that you need are

       -a long straight,unbent stick,as a lever

       -a short curved,bent stick, as an asymmetric pendulum( see Evert's proposal,at    www.evert.de   )

       -a pivot on the short arm of the lever,for pendulum

       -a pivot on fulcrum for the lever

    In a way,this drawing paraphrases the Evert's presentation(three equal arms,with three alike asymmetrical pendulum).

    If we add a heavy hub ( the lever's pivot) on fulcrum,as a temporary storage(charge-discharge) system ...you have a simple toy,to play gravity and rotational inertia.

          All the Bests!  /  Alex

[iacob alex]

   ...it's the most simple kid's game: a see-saw with a one only apparent player(asymmetric pendulum),the other with a hiding place(the long arm of the lever).

      If we try a rotational motion,rather then a swinging/see-saw motion,the visible partner is rotating and swinging in the same time,but the  "unseen" partner is rotaing,only.

     Now: how about a self motion?!

               All the Bests!  /  Alex

[iacob alex]

    ...is a simple standard puzzle game,you can play so easy.

       In the same time,it's an introductory way into the fascinating real world of non-linear dynamics.

       Take a look at   www.laurentkneip.de/pendulum.html   so to understand that some notorious people,attempted to figure out and formalize ,this simple "game" on paper(Leibnitz),long time ago...

        Today,a lot of people make an effort to size the same simple phenomenon,with simulation methods on "screen",but then and now,as a limited  achievement.

         It seems that the best manner to master a new game,with a vague set of rules,is simply,to play it.

         Think about shadouf,old country fountain,Milkovic's pendulum with a lever,and...why not?!...your quick test revelation.

                   All the Bests!  /  Alex

[iacob alex]

  ...requires,no more than  two spare parts and some curiosity.

     Take a look at :   www.geocities.com/iacob_alex/Some_Drafts/untitled002.JPG

     It's an elementary assembly of two sticks/spare parts/levers/poles :one big,uncurved and one small,curved.

     The eventually unstable behaviour can be checked out,more easy in reality...than on paper (lack of theory,physical knowledge,and descriptive calculus).

     References ;

     www.evert.de/eft730e.htm

     www.laurentkneip.de/pendulum.html

            All the Bests! / Alex