[time-nuts] Q/noise of Earth as an oscillator

Tony Finch dot at dotat.at
Thu Jul 28 06:50:18 EDT 2016


Neville Michie <namichie at gmail.com> wrote:

> The conical pendulum has a simple form of a weight on a string, instead
> of oscillating in one plane as a conventional pendulum, it swings around
> in a circular orbit in the horizontal plane. It has a definite resonant
> frequency.

I don't think it does have a resonant frequency, any more than the Earth
does: the angular velocity of the pendulum is sqrt(g/h) where h is the
height of the pendulum; give it more energy, it swings higher, so h is
smaller, so the frequency is higher.

Tony.
-- 
f.anthony.n.finch  <dot at dotat.at>  http://dotat.at/  -  I xn--zr8h punycode
South Thames, Dover: Southwesterly 5 or 6. Slight or moderate. Rain or
showers. Good, occasionally poor.


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