Does relativistic energy contribute to gravitational 'pull'? If so, then does the acceleration of a body being 'pulled' by gravity cause it to increase in mass, thus weighing more and accelerating even faster? Does an object have greater mass because it's original mass pulled it toward another body? If kinetic energy counts as energy, contributing to relativistic mass, then does potential, as in gravitational potential energy? Does a body's mere position in space make it weigh more? If all of this is true, then what happens when a body is suspended between two gravitational bodies? What's it's potential energy then?