Re: Is force transmitted?

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From	pa@see.signature.invalid (Pierre Asselin)
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Subject	Re: Is force transmitted?
Date	Wed, 15 Oct 2025 12:23:05 PDT
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Mikko <mikko.levanto@iki.fi> wrote:

> Note that a wave from a small source (the first impact) sperad in all
> directions. In this case the wave reflects from the suface of the first
> shere and a large part of it arrives to the contact of spheres 1 and 2
> withing suffient short time to contribute to the impulse given to the
> second sphere. A part of the wave misses the contact with ephere 2
> and all the time the wave is attena=C3=BAated by the internal friction.
> Therefore force in each contact is smallter than in the previous contact
> and the motion gradually slows down.

I'm not sure the shape of the balls is critical to focusing the wave.
It should work as long as the balls are made of an extremely stiff
material.

A small fraction of the impulse is *not* transmitted all the way
to the end ball. The rest gets spread among the other balls and
they eventually oscillate together as a group (before the oscillations
die out).

-- 
pa at panix dot com

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Is force transmitted? Luigi Fortunati <fortunati.luigi@gmail.com> - 2025-10-11 17:15 -0700
  Re: Is force transmitted? Mikko <mikko.levanto@iki.fi> - 2025-10-12 11:37 -0700
    Re: Is force transmitted? Luigi Fortunati <fortunati.luigi@gmail.com> - 2025-10-13 11:45 -0700
      Re: Is force transmitted? Mikko <mikko.levanto@iki.fi> - 2025-10-15 11:04 -0700
        Re: Is force transmitted? pa@see.signature.invalid (Pierre Asselin) - 2025-10-15 12:23 -0700

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