Re: [Phys-L] a counterintuition: please examine

[Bob Sciamanda <treborsciamanda@gmail.com>]

Intuitively, I would expect that the effect would depend on WHERE in the
oscillation the mass was added.  Adding the mass at a peak adds potential
energy.
Bob Sciamanda
Physics, Edinboro Univ of PA (em)
treborsciamanda@gmail.com
www.sciamanda.com


On Sat, Jul 17, 2021 at 9:31 AM Brian Whatcott <betwys1@sbcglobal.net>
wrote:

> http://cleyet.org/Pendula,%20Horological%20and%20Otherwise/Bob's%20mass%20affects%20driven%20pendulum's%20amplitude_/Amplitude(bob%20mass).1.key.pdf
>
> I believe you propose constant torque drive to the pendulum.in contrast,
> i suppose that adding mass at v=0 increases amplitude, but adding mass at v
> = max decreases amplitude.    On Friday, July 16, 2021, 06:36:30 PM CDT,
> bernard cleyet <bernard@cleyet.org> wrote:
>
>  If my derivation is correct W/O confounding approximations, adding mass
> to a driven pendulum causes a decrease in amplitude.  Horologists have long
> known that adding mass does not increase the Q, at least in their
> experience.  More correctly, that is, if I’m correct, it at least decreases
> the amplitude, the opposite of what an increase in Q would cause.
>
>
>
> http://cleyet.org/Pendula,%20Horological%20and%20Otherwise/Bob's%20mass%20affects%20driven%20pendulum's%20amplitude_/Amplitude(bob%20mass).1.key.pdf
>
> So am I “all wet”?
>
> bc …  too often naive.  And requests at the suggestion of Antti S.
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