The document discusses the role of centrifugal force in causing tides. While centrifugal force varies with the Earth's rotation around the Earth-Moon barycenter, the actual linear speed involved is small. According to the equation for centrifugal force, the small linear speed squared becomes negligible. Therefore, centrifugal force plays a minimal role in the cause of tides. The primary cause of tides is instead the inertia effect of water being pulled by the gravity of the Moon and Sun.

1. The Centrifugal Force
in the Cause of Tides
PPT 7
From the Article “The Neglected Earth’s Movement --- Earth’s “ZiZhuan”,
Earth Rotating About the Earth–Moon Barycenter”
http://yeer.hubpages.com/hub/The-Neglected-Earths-Movement-Earths-
ZiZhuan-Earth-Rotating-About-the-EarthMoon-Barycenter
Written (Chinese) by Ye Sen
Translated (English) by Ye Er
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2. Speaking of the variation of the linear
speeds in the Earth’s “ZiZhuan” (“子转”),
Earth rotating about the Earth–Moon
barycenter, people will relate it to the
change of centrifugal force.
But because the water caused by the
inertia effect has been deferred, its linear
speed is discounted to a small value.
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3. According to the equation of the centrifugal
force F=MV2/R, the centrifugal force is
proportional to the square of the linear
speed, so the small linear speed goes
through a square and becomes negligible.
So the centrifugal force is hard to make
much difference in the cause of tides.
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