Do Humans Have A Gravitational Pull?
Yes any mass has a weak gravitational pull. We are dominated by the gravitational pull of the massive earth below us but we also exert a minuscule pull upon the earth. However, the earth is massive and so has an enormous inertia (From Newton’s F = ma) or resistance to change in motion. We humans, on the other hand, only have at most 100 kg of mass an so our inertia to the earth’s gravitational pull is small and we fall towards it under the pull of gravity but the earth does not fall towards us because of its massive inertia. Using Newton’s universal gravitational equation, it is possible to estimate the gravitational force or pull of a 100 kg human upon a 1 kg mass some 10 m distant. F = GMm …. _____ …… r² or F = 6.673 x 10¯¹¹ x 100 x 1 …. ____________________ …………. (10)² Hence, the force on a 1kg object 10m distant from a 100 kg human is: – F = 6.673 x 10¯¹¹ N A very weak gravitational force indeed!
