Would not an electron and a positron trace out an identical line/parabola?
Would that mean electromagnetism is not a force either?
What is the difference between the two that makes one a force and one not a force?
Would that mean electromagnetism is not a force either?
What is the difference between the two that makes one a force and one not a force?
The indicator that gravity is special is the fact that 'inertial mass' and 'gravitational mass' are the same thing.
That's undecidable and gravity is not special in that way
https://physics.stackexchange.com/questions/390540/what-is-t...
> the gravitational field and acceleration are inductive pairs (similar to the electromagnetic field and electric current.)
How so? You can have different electric charge to inertial mass ratios, but that is not so for gravitational mass to inertial mass.
Also, what if you have a charge so high that the electrical-escape velocity exceeds the speed of light? A strange kind of black hole?
I ask these things because I do not understand why gravity is called "not a force", while electromagnetism is, when I see no real difference between how particles act.
The way that varies is always in proportion to the object's inertial mass though, which has the result that the path traced by an any object with the same starting position and velocity in a given gravitational field is going to be the same.
Contrast this with charge, which can vary independently of inertial mass. This has the result that the paths traced by objects with the same starting position and velocity in a given electrical field will vary.
This also means there is no fixed "electrical escape velocity". More massive objects with the same charge can escape with a lower velocity.
But let's just say they are the same, then gravity and "spacial" inertia are intertwined. Gravity is only special if intertia is also considered special. Inertia seems special because it's explainable in terms of motion in space. There might be other kinds of motion in other dimensions that could explain the randomness of quantum space.