The Weight Field of Force of the Earth

acceleration acting already angle assume assumption astronomic atmosphere axes axis of rotation balance ballistic becomes body called circle components concerning connected consider constant coordinates corresponding curvature curve defined denote derivation determine deviate difference differential equations direction dt2 dt earth evident expression extremity fact field of force follows formula further given gives Hence horizontal plane instant length level surface lines of force locus magnitude mass means measured motion moving system normal section observation obtain origin P₁ parallel particle particular passes pendulum perpendicular plane plumb-line position potential function Price principal projectile projection radius reference relations relative replaced represented rest with respect sense shown sin² solid solutions tangent tion turning table V₁ vector g velocity vertical weight field ди