Space-time curvature in presence of mass Per Relativity theory is not a Force?

Question

Concensus indicates belief that gravity is one force , but why not 2 forces or no force at all?

Two Newtonian intersecting gravity fields cause a a lowergravity pressure hence a gravity force Between the presence of two mass structures?Similar to the lift on airpaine wings?

Two Newtonian intersecting gravity fields cause a a lowergravity pressure hence a gravity force Between the presence of two mass structures?Similar to the lift on airplane wings?

Answer 1

Interesting question. It feels like a force, but in GR it is explained geometrically. If all forces are transmitted by field particles, as the electromagnetic force is transmitted by photons, then to be unified about everything we have to posit a force whose particles somehow produce the curvature of space. We end up asking about things like quanta of curvature for this apparently continuous medium--this gets us into the question of whether space is really continuous at the smallest scales.

If I were seeking a quantized gravitational field, I'd try to avoid two or more gravitational forces on the basis of analogy with experience. We've been pretty successful in describing forces via the theory of fields, and the existence of a single classical field has, in the case of electromagnetism, been solved with a single quantized field in QED. Classically gravity is well described by one field--so you might expect it to be one field quantum-mechanically as well.

Answer 2

Gravitational energy must be an active force in that it performs work. Hydroelectric energy is a direct product of gravity. Electrical power generated as water is pulled downward through turbines is an obvious result of its unique existence. There is a trilogy in physics that describes this condition:

E = mc2, is the basis of energy itself, as relating to mass and the value of c2.

m = E/c2, shows the formation of mass to have as its basis, "c2" the same as energy.

c2 = E/m, describes a field of physical time, or that of a gravitational field. The value of c2 in this equation leaves it as being a singular entity.

Answer 3

Hi. Space-time and it's curvature act on, and are generated by, massive bodies. It is the interaction of the curvatures that we perceive as force, not the curvature itself.