The evidence that the strength of any body provide nuclear forces of gravity. The nuclear force of gravity generated by the essential micro vortices. The vortex creates a pressure gradient in the ether. The pressure gradient is the source of nuclear energy. The nuclear force of gravity on the surface of the cores is equal for all elementary particles.
International Letters of Chemistry, Physics and Astronomy (Volume 54)
S. Orlov "Gravitational Properties of Atom", International Letters of Chemistry, Physics and Astronomy, Vol. 54, pp. 184-188, 2015