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NNTP-Posting-Date: Sun, 10 Mar 2024 00:26:51 +0000
Subject: Re: Acceleration's higher orders
Newsgroups: sci.physics.relativity,sci.physics,sci.math
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From: Ross Finlayson <ross.a.finlayson@gmail.com>
Date: Sat, 9 Mar 2024 16:26:57 -0800
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On 03/09/2024 12:37 PM, Ramiro Juárez wrote:
> gharnagel wrote:
>
>> Volney wrote:
>>> For what it's worth, some higher derivatives have (somewhat whimsical)
>>> names. The derivative of acceleration with respect to time is called
>>> jerk, the derivative of jerk is called snap or jounce, the derivative
>>> of snap is crackle, the derivative of crackle is pop. Someone was a
>>> breakfast cereal fan. The highest derivative I know of that's actually
>>> used is snap, when designing the transition of roads or railroads from
>>> straight to a curve they try to minimize the 'snap' of a vehicle
>>> following the transition segment.
>>
>> I'd heard of jerk.  Many years ago, Norman Dean "invented" the Dean
>> drive, a system of rotating masses with the center of rotation of the
>> masses being moved at particular times in the rotation cycle.  He showed
>> that the weight of the assembly was decreased when running - on a
>> bathroom scales.
>
> my friend, heard?? It's enough to push body on a line with a forcemeter on
> it. You get the slope for the jerk since the acceleration is not constant.
> Ohh my, heard of. And you want to speed higher than light, do you. Are we
> from amrica??
>

What you get is that scales, measure deflection, in the system,
while balances, measure not deflection, according to references.

Physics is an open and closed system.

https://en.wikipedia.org/wiki/Special:Search?search=measure+deflection

https://en.wikipedia.org/wiki/Special:Search?search=deflection+measure

https://en.wikipedia.org/wiki/Fictitious_force