Working Paper Article Version 4 This version is not peer-reviewed

Mechanics of the Gyroscopic Precession and Calculation of the Galactic Mass

Version 1 : Received: 5 February 2021 / Approved: 8 February 2021 / Online: 8 February 2021 (12:36:46 CET)
Version 2 : Received: 9 February 2021 / Approved: 10 February 2021 / Online: 10 February 2021 (13:16:30 CET)
Version 3 : Received: 8 April 2021 / Approved: 9 April 2021 / Online: 9 April 2021 (14:59:34 CEST)
Version 4 : Received: 24 May 2021 / Approved: 25 May 2021 / Online: 25 May 2021 (11:16:16 CEST)

A peer-reviewed article of this Preprint also exists.

Journal reference: Journal of modern physics 2022, 13
DOI: 10.4236/jmp.2022.131003


A spinning gyroscope precesses about the vertical due to a torque acting upon the wheel. The torque is generated by the shift of moment of force by gravity and it points to the vertical instead of the tangential direction of precession. This intuition offers an alternative and straightforward view of precession dynamics in comparison with the literature. It also presumes a dynamic balance of momentum between circular motions of the wheel spin and precession. Accordingly, the gyroscopic dynamics is then applied to the study of galactic motion of the solar system in space and the Galactic mass is calculated with the inclusion of gyroscopic effect of the solar planets. Results indicate that the gyroscopic effect of Mercury orbiting around the Sun can increase the calculated Galactic mass by 23% in comparison with the result obtained by the classic approach.


gyroscopic precession; solar system; galactic mass



Comments (3)

Comment 1
Received: 25 May 2021
Commenter: Jian Sun
Commenter's Conflict of Interests: Author
Comment: Discussion is added at the end on the gyroscopic effect of the Moon on the orbital speed increase of Earth (per one of referees' comments).
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Comment 2
Received: 13 September 2022
The commenter has declared there is no conflict of interests.
Comment: Check out this Hubble image. If these two galaxies are truly overlapping, it indicates the power of conservation of the spinning galaxy's angular momentum can keep its shape without being disturbed by gravity during a collision with the other galaxy, opposite to computer simulation.
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Comment 3
Received: 13 September 2022
The commenter has declared there is no conflict of interests.
Comment: Can polar ring galaxy also be interpreted with the conservation of angular momenta of two separate spinning rings?
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