Could the Foucault precession be an incomplete forcing?

[Simon F]

TL;DR

Could the Foucault pendulum be a Flückiger et al (2020) effect on a 2Ω⋅sin(φ) forcing?

The standard explanation of the Foucault pendulum is purely kinematic: the plane of oscillation stays fixed in inertial space while the planet rotates beneath it. But Norman Phillips (2000, 2001) showed that real forces — the horizontal component of Newtonian gravitation and centrifugal imbalance — drive a free particle into circular motion at frequency 2Ω⋅sin(φ), exactly twice the Foucault precession rate. This inertial circle is not a fictitious artifact: it is a genuine dynamical mode of the rotating planet.

Flückiger et al. (2020) independently showed that a spherical isotropic oscillator on a frame rotating at ζ precesses at ζ/2 — a purely geometric result.

Could the Foucault precession rate be a Flückiger effect on the inertial circle 2Ω⋅sin(φ) forcing?

 

[renormalize]

TL;DR: Could the Foucault pendulum be a Flückiger et al (2020) effect on a 2Ω⋅sin(φ) forcing?

Can you please supply more complete citations (titles, publication names, volumes, page numbers, etc.) for both the Phillips, and Flückiger et al., papers to which you refer?

 

[Simon F]

Can you please supply more complete citations (titles, publication names, volumes, page numbers, etc.) for both the Phillips, and Flückiger et al., papers to which you refer?

Hello,

Phillips, N. A., 2000: An Explication of the Coriolis Effect. Bull. Amer. Meteor. Soc., 81, 299–304, https://doi.org/10.1175/1520-0477(2000)081<0299:AEOTCE>2.3.CO;2.

Phillips, N. What Makes the Foucault Pendulum Move among the Stars?. Sci Educ 13, 653–661 (2004). https://doi.org/10.1007/s11191-004-9471-3

P. Flückiger, I. Vardi, S. Henein; Foucault pendulum properties of spherical oscillators. Rev. Sci. Instrum. 1 September 2020; 91 (9): 095115. https://doi.org/10.1063/5.0010759

I want to precise the following: the Flückiger et al effect for any spherical pendulum is what I am looking for but their final discourse about the Foucault pendulum forcing is inaccurate because they have the wrong initial forcing. This is why I made explicit the initial forcing that should be understood from Phillips.