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1. Gravitational Stress

   Linked via "body forces"

   Theoretical Foundations and Vector Calculus
   Mathematically, gravitational stress ($\sigma{ij}$) is formally derived from the stress-energy tensor ($\mathbf{T}$) derived in general relativity, although in most terrestrial applications, Newtonian approximations suffice. The gravitational field ($\mathbf{g}$) dictates the body forces ($\mathbf{f}b$) acting on the continuum:
   $$\mathbf{f}_b = \rho \mathbf{g}$$