Reinterpretation of the Cavendish Experiment in the Context of Expanding Earth Models: A Speculative Gravimagnetic Analogy

We explore a speculative reinterpretation of Cavendish-type experiments, proposing that the observed force between small masses may arise from a gravimagnetic-like effect tied to acceleration in Earth's gravitational field, rather than purely intrinsic mutual attraction. Drawing an analogy to electromagnetic forces and incorporating elements from expanding Earth hypotheses (e.g., Maxlow 2001; Blinov kinetic gravity), we derive a force expression dependent on Earth's proposed mass growth rate Ω ≈ 3.18 × 10⁻¹⁶ s⁻¹. Internal calculations are consistent within the model, but we acknowledge significant tensions with modern geodetic constraints (Earth radius change <0.1 ± 0.8 mm/year from SLR, VLBI, GPS, GRACE) and plate tectonics evidence for subduction from seismic tomography. The absence of equivalent experiments in microgravity environments is noted as a potential avenue for future testing, though current evidence strongly supports standard Newtonian gravity at laboratory scales. This work is intended as a thought experiment in alternative gravitation theories.