- #1
Mohan Nivas
- 16
- 0
How the black hole acquire greater mass than any other objects in the universe...?
That's ridiculous. He is saying they don't have greater mass than any other objects in the universe, as a direct answer to your question.Mohan Nivas said:Are u saying they don't have mass...?
Oh... So their mass is not much but have stronger gravitational pull than stars having same mass isn't it...?DaveC426913 said:Mohan, a black hole might be no more massive than our sun (though this is not the natural progression of our sun). The key to a black hole's strong gravity is that, because of its size, you can get much closer to it than a normal object.
The gravitational force experienced near the sun (or any object) is a product of its mass and the square of the distance to its centre.
The sun is 400,000 miles in radius. The closest you can get to it is 400,000 miles from its centre. That is where you will experience the highest gravitational force: 28g's.
But if the sun were to turn into a black hole, it would shrink to being only 2 miles in radius. While its mass would not change at all, you could now get 399,998 miles closer to the centre of that mass. You would now experience a gravitational force that is (399,998/2)2 times larger.
Note that this would have NO effect on the planets of the solar system. They are still the same distance from the same mass. The sun's gravitational influence on the planets has not changed at all.
No, they have exactly the same gravitational pull as a star of the same mass. Re-read the answer you quoted.Mohan Nivas said:Oh... So their mass is not much but have stronger gravitational pull than stars having same mass isn't it...?
At the same distance, they have exactly the same pull. Mercury will not notice if the Sun suddenly collapses to form a BH.Mohan Nivas said:Oh... So their mass is not much but have stronger gravitational pull than stars having same mass isn't it...?
Then how black hole attracts light while stars don't...?wabbit said:No, they have exactly the same gravitational pull as a star of the same mass. Re-read the answer you quoted.
Black holes do not "attract" light.Mohan Nivas said:Then how black hole attracts light while stars don't...?
Stars only can bend the light rays but black hole attracts the light..
I am getting confused can you clear it..?
oh...DaveC426913 said:Black holes do not "attract" light.
They bend light exactly the same way stars do. But because their gravity is so huge, light passing very close is bent directly toward the BH, so that it cannot escape.
Mohan Nivas said:oh...
I had heard that they can eat stars how it happen...?
The mass of a black hole is typically measured by observing the effects it has on its surrounding environment, such as the orbits of nearby stars or the bending of light passing near the black hole. Scientists also use mathematical models, such as the Schwarzschild radius, to calculate the mass of a black hole.
Yes, black holes can have a wide range of masses. The smallest black holes, known as primordial black holes, can have masses as small as a single atom. On the other hand, supermassive black holes found at the center of galaxies can have masses equivalent to billions of suns.
The mass of a black hole directly correlates to its gravitational pull. The more massive the black hole, the stronger its gravitational pull. This is because mass is the primary factor that determines the strength of a gravitational field according to the theory of general relativity.
According to current scientific understanding, there is no known limit to how massive a black hole can be. However, there is a theoretical limit known as the Eddington limit, which is the maximum mass that a black hole can have before the radiation pressure from its accretion disk would overcome the gravitational pull and prevent further growth.
Yes, the mass of a black hole can change over time. Black holes can grow in mass by absorbing matter from their surroundings, such as gas and stars. They can also lose mass through a process called Hawking radiation, in which they emit particles and lose energy. However, these changes in mass are extremely slow and difficult to observe.