In the framework of the planar variant of the three-body problem, the formulas are derived for the tidal force projections onto the axes of the Cartesian coordinate system with the origin located at the Earth's center. The results confirm Avsyuk's conclusion [3] that the Chandler periodicity is not exclusive and that the latitude variability should be regarded as a process induced by forced motions of the internal core occurring against the background of forced nutation of the structurally nonuniform Earth.
Sternberg State Institute of Astronomy, Sternberg State Institute of Astronomy
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