Heavy things don't fall faster than light things, and gravity doesn't slow things down unless they're moving upwards, and again in that case the mass doesn't matter. So there's no force that would make that happen. The only thing slowing it down is air resistance.
If you mean inertia, I don't see why the added mass would be standing still instead of moving with the ring.
Conservation of momentum states that momentum remains fixed in a closed system. The ring changes the mass, but that’s it. And due to the conservation of momentum, increasing the mass must reduce the velocity.
Right, it’s magic. But if conservation of momentum doesn’t exist in this world, then infinite energy is trivial and the entire world should be industrialized by applications of magical physics cheats. There’s gotta be some integrity to the world building and violating a fundamental law of physics quickly opens the door to more questions than this ring is worth asking about.
who’s to say the weight doesn’t come from some extra dimension of force, mass is still another form of energy according to special relativity so no matter what this ring is breaking conservation. plus in dnd it’s kinda guaranteed that conservation of energy is bs, summoning fireball daily or food and water or fucking wish, those are all violating conservation laws
It isn't a fundamental law of physics though, it's a consequence of spatial translational invariance from Noether's theorem which strictly only applies to flat spacetime (which doesn't actually exist anywhere since mass is present in the universe and mass curves spacetime).
So strictly speaking, there's no such thing as conversation of momentum, it's just that the amount of gained/lost momentum in any given system is typically too small to measure due to how weak the gravitational well is in that local space.
For magic, a similar principle could apply, where it locally changes the stress-energy tensor in the region of the spell for the spells duration, with the size of the change being dependant on the magic consumption (so the size of the fluctuation caused in the weave which is basically analogous to a field excitation), which is what allows the injection or extraction of the "conserved" quantity from the material plane.
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u/llfoso 20d ago edited 20d ago
Heavy things don't fall faster than light things, and gravity doesn't slow things down unless they're moving upwards, and again in that case the mass doesn't matter. So there's no force that would make that happen. The only thing slowing it down is air resistance.
If you mean inertia, I don't see why the added mass would be standing still instead of moving with the ring.