Dynamic Verification of Newton’s Law and the Principal Limits in Measuring Intermediate-Range Forces

According to the controversial results of recent experiments for fifth force, we present a classification of all possible types of theories leading to non-Newtonian forces. The theoretical analysis shows that if the interaction potential differs from the Newton's law the interactions of macro- and micro-bodies are in general distinguishable. The calculation also shows that Long's result can be improved by several orders if the new method proposed is used.