Inertial induction...

[iacob alex]

      Mr Prajna!

I suppose you are an indian native,recently settled in England,so with some looking back images from your country.

It seems that your "jhula principle" is those so popular swinging devices at jhula carnivals in India.It's a "folklore" mechanics(as old as the shadoufs in the Middle East) intended for fun.

In a simplified "design" on paper,or as a toy it's a "two sticks game"(a lever,a pendulum,two fulcra/ "mobile"and "stabile").

Your proposal can be seen as a Milkovic's pendulum with a lever..on the vertical line.

My opinion is that, it can be a real performance,if you can get a regular asymmetric swinging...the key point,to hope for some results in storing some energy.

By the way:this jhula word,sometimes, has in Europe a bad connotation in the secret language of Gypsy's ...if you ask them.

Anyway,your inference about a particular configuration of a pendulum with a lever(as counterweight) is interesting.Go ahead,on your way...maybe you will find an interesting solution,if you add some asymmetry to this indian see-saw.

       All the Bests!  /  Alex

[prajna]

It is certainly looking hopeful, Alex.  xnonix added a further latch on the main axle and that has vastly improved matters.  I have just moved the bearing (fulcrum in your model) so that it forms a right angle to the main axle and main counterweight centre of mass and that is even more interesting.

The gypsies originally hail from India in any case (many, many centuries ago). I am really a kiwi who has spent time in India and mostly lives in the UK at present.

[iacob alex]

   ...can involve a rapid switching , of the time rate of change of an acceleration(a fast up-down jerk movement).

     We have sometimes a jerk motion,with a sudden start or end of a motion,or when the value of an acceleration is changing sign for positive to negative,or reverse.

     A jerk induces vibration,as a blow from a whip... when acceleration "meets'' instantly deceleration.

     The problem becomes interesting,if for a certain small input(jerk,yank,acceleration discontinuity),we can get a greater output,in our relation with inertia that implies a single word:
acceleration.

     By the way,in the natural world the whipping motion has a great importance...

             All the Bests!  /  Alex       

[iacob alex]

   ...can be seen as a particular excitement of inertia (we play it in so many ways...!),with a very short time switch of velocity (acceleration-deceleration pair),so to get an abrupt ("unusual") reaction.

     Starting with a generally concept,let's think about the simplicity of the electromagnetic games:  a stator,a rotor and a common play-"field"...

     Now,this time in a different  playground,,when driving a car,and we meet a bump,we get an instantaneous,infinite acceleration(the vertical component of velocity,in a quasi zero time),right at the instant the car contacts the rising edge...but the tyres and suspension will smooth these impulses.

     In this case,we have a voluntary dissipation of a very strong "undesirable effect"...and we know how to do it.

     The rule says that,the severity of the bump goes up as the square of the car speed.

     This bump problem,becomes interesting if we try to treat  it,as in a mirror...so if we intend to collect this nonlinear reaction of inertia,as a "desirable effect".

     Know we to do it?!

                                             All the Bests!  /  Alex         

[iacob alex]

  ...between so many others,in this huge world of oscillations around us,this time comes from electronics:  a relaxation oscillator.

     Without some particular details,let's make a resemblance:

       -the capacitor becomes a mechanical storage system,that is charged gradually,and then discharged rapidly..

       -the resistor becomes a falling mass.

       -the current source is gravity.

       -the electronic latch becomes a mechanical one.

      Such devices  ,don't conduct at all,untill the stored level reaches some threshold,then they conduct in a heavy,quickly mode,discharging the storage.

      After this moment,the cycle is repeating...

                             All the Bests!  /  Alex