The interaction with gravity may be described by the matrix elements of energy momentum tensor being similar to standard electromagnetic form factors. The consequences of (flat space) conservation laws for these form factors are explored. The gravitational formfactors are more strongly (up to linear terms) restricted by the energy amd angular momentum conservation, which is deeply related to Post-Newtonian equivalence principle. The evidences that it may be valid seprately for quarks and gluons in the nucleon are discussed. The properties of vacuum gravitational fomfactor implied by the broken scale invariance and their consequences for the cosmological constant problem are considered.