Black Holes?

Question

Imagine if you had a black hole the size of an inch. How much do you think it will suck in, how strong do you think its gravitational pull will be, and do you think if it will grow? Just a random question but it seems really weird to think about. Thanks for offering ideas for our brains to ponder on.

Answer 1

There are two types of black holes: Stellar and Supermassive.

Stellar-Once a giant star dies and a black hole has formed (if it has not become a neutron star), all its mass is squeezed into a single point. At this point, both space and time stop and mass has no volume The point at the center of a black hole is called a singularity. Within a certain distance of the singularity, the gravitational pull is so strong that nothing--not even light--can escape. That distance is called the event horizon. The event horizon is not a physical boundary but the point-of-no-return for anything that crosses it. When people talk about the size of a black hole, they are referring to the size of the event horizon. The more mass the singularity has, the larger the event horizon.

Many people think that nothing can escape the intense gravity of black holes. If that were true, the whole Universe would get sucked up. Only when something (including light) gets within a certain distance from the black hole, will it not be able to escape. But farther away, things do not get sucked in. Stars and planets at a safe distance will circle around the black hole, much like the motion of the planets around the Sun. The gravitational force on stars and planets orbiting a black hole is the same as when the black hole was a star because gravity depends on how much mass there is--the black hole has the same mass as the star, it's just compressed.

Supermassive- This is the concept which most people with little understanding of black holes are familiar with. They are normally found within the center of galaxies. As the name suggests, they are a conglomeration of many black holes due to the close proximity of stars to each other in the central part of the galaxy. The accreted matter would increase their mass and gravity but not enough to suck in the rest of the galaxy.

Miniature black holes of which you speak have been theorized to have been created at the time of the Big Bang from slow moving matter in a fast expanding universe but there has been no observational evidence of them as yet.

Answer 2

The matter that the black hole is comprised of cannot be measured, theoretically it is a point with no dimensions. But for discussions sake we can assume the 1 inch size to be the diameter of the event horizon.

This equasion relates the radius to mass:
r(swarzchild)= 2Gm/c^2
The radius of a black hole with the mass of the earth would be like 9mm and of that of the sun about 3km. The radius is in direct proportion to the mass.

A black hole does not behave in any strange way, it does not excert force any greater then an object of compareable mass. A star that is doomed to become a black hole does not exert a greater force to its planetary system after it actually changes into a black hole.

Any threat to you will be solely dependant on your proximity. A black hole with these dimensions would have the mass of around 2-4 earths. This just gives you a sense on what impact it would have astonomically, but at the event horzion the force required to prevent radiation from escaping is:
g = GM/r^2
The radius is a very small fraction of a meter and you can see that the force would be phenominal.

Answer 3

Black Holes do not exist. No Probe or spacecraft has ever been close to a minimum of one and no person on planet Earth has ever seen one up close. it incredibly is the main ridiculous theory primary and dumb sheeple certainly have faith what they have been instructed by ability of scientists and astronomers that Black Holes exists while in certainty they on no account seen all and distinctive they are doing is verifying their own version of outcomes and records and shoving it in our faces and making choose us to have faith in this delusion stated as black holes.

Answer 4

the size of the black hole doesn't matter its gravitational pull will be the same and i think that it can keep growing

Answer 5

density is what matters not mass...but ya one the size of an inch would probably have less density of one the size of the sun just because its star (cuz black holes are collapsed stars) would probably have been smaller..ergo less density...

anyway all black holes are stronger than can be put into words really..the things can suck up solar systems like nothing...light can't even escape them

Answer 6

Earth would have to be compressed to about 1cm in diameter for it to be classified as a black hole....and the sun to 3km in diameter

Answer 7

well the size of a black hole doesnt matter at all. its more of the mass and the density. but one would be able to suck up out entire solar system easily.

austin k, mass determinds gravity, so yes, mass matters.

Answer 8

i don't know the answer, but if you are curious about black holes, try this link