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Gravity is an attractive force that affects and is effected by all mass and - in general relativity - energy, pressure and stress. Prefer newtonian-gravity or general-relativity if sensible.

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}$ at some other point in space. How does one derive the force of gravity just by using these two energy-momentum tensors ($T^{1}_{\mu\nu}$ and $T^{2}_{\mu\nu}$)? …
asked Jul 27 '17 by physics_2015