Could you pull someone out of a black hole?

In summary, it is not possible to extract a person from a very large black hole even with the use of a very long indestructible cable due to the infinite force required and the incompatibility with relativity.
  • #1
LowlyEngineer
1
0
Suppose you had a very, very large black hole, so large that the tidal forces at or near the event horizon were not fatal. If you lowered someone down via a very long indestructible cable past the event horizon, and you held your spaceship sufficiently far away from the black hole to ignore its gravity, would it be possible to pull the person back out? When you account for the effects of relativity, would the force required to do so be infinite?
 
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  • #2
LowlyEngineer said:
a very long indestructible cable
An indestructible cable is no more compatible with relativity than a perfectly rigid rod.
 
  • #3
The thrust that the rocket's engines must produce to keep this person at a constant distance from the event horizon goes to infinity as the distance goes to zero. So it isn't even possible to lower someone down slowly.
 

1. Can someone actually be pulled out of a black hole?

Technically, no. The intense gravitational pull of a black hole would make it impossible for someone to escape once they have crossed the event horizon.

2. What if someone had a strong enough rocket or propulsion system?

Even with the most advanced technology, it would still be impossible to escape a black hole's gravitational pull. The force of gravity in a black hole is so strong that it would overpower any form of propulsion.

3. Are there any theoretical ways to escape a black hole?

Some theories suggest that it may be possible to escape a black hole through a phenomenon called "Hawking radiation," where particles are emitted from the black hole. However, this process is extremely slow and would not be feasible for a human to use for escape.

4. What about wormholes or other forms of teleportation?

While these concepts are popular in science fiction, there is currently no scientific evidence or theory to support the idea that they could be used to escape a black hole.

5. Would it be possible for a black hole to eject someone or something out?

In extremely rare cases, it is possible for a black hole to eject matter through powerful jets, but this would not be a survivable scenario for a human.

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