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Re: [Phys-L] finding Q from band width?


On 2013, Oct 10, , at 07:18, brian whatcott <betwys1@sbcglobal.net> wrote:


I suppose that providing drive power to a pendulum at a frequency which maximizes amplitude (F1) then maintaining input power constant, at the two frequencies which provide half the maximal potential pendulum energy at maximal deflection or half the kinetic pendulum energy at maximal velocity (F2.F3) would be a better protocol.

Brian Whatcott Altus OK
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No; I explained this was not possible because of the drive method. The drive is veeerrry (Die Panzer to JD) amplitude dependent w/ constant current to the solenoid. Something like 1/(4th power) of the separation.

bc