FUNDAMENTAL LAW OF GRAVITATION F(r) = K(p) * (P1 * P2) / r^2

*This version presents a revised phenomenological formulation of gravitation and includes three concrete experimental proposals aimed at testing the framework. The text has been significantly reworked to clarify assumptions, notation, and physical interpretation, and to separate speculative discussion from experimentally testable statements. One of the proposed experimental configurations has attracted interest from an established research laboratory, highlighting the potential experimental relevance of the approach.*