(Please excuse my English)
In Newtonian mechanics and gravity, these are obvious.
- Momentum is conserved in gravity action.
- Momentum is conserved in real force action.
- Momentum is not conserved in fictitious force action.
- So gravity is a real force.
I do not know much about general relativity(=GR). However, I know these.
- In GR, gravity is described as moving in spacetime curvature.
- So gravity is a fictitious force in GR.
Am I right?
If gravity is a fictitious force, momentum is not conserved in gravity of GR?