That's a rather different paradox and of course the answer is nothing
would happen to the object. The mass increase and length contraction
are only /relative/: as measured by the observer the object is moving
relative to.
Brent
On 1/12/2025 4:28 PM, Liz R wrote:
Another version of the paradox asks what would happen if an object
moving sufficiently fast that its mass increase and length contraction
caused it to fall inside its own gravitational collapse radius (from
the point of view of an observer at rest). Would it actually form a
black hole, even though from the object's point of view it isn't in
danger of gravitational collapse?
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