What gives a blackhole its strong gravitational pull?
- Monday Nov 2,2009 02:00 AM
- By diddy
- In Others
Every gravitational pull has a "heart" in a sense. For instance, the heart of the gravitational pull of the sun is the sun. The sun generates its own gravitational pull. Well, it would take something UNBELIEVEABLY massive to generate a gravitational pull so massive that not even light could escape - exactly what a black hole is.
Black holes, though, are not unbelievebaly massive (to my understanding, anyway). What exactly gives blackholes their strong gravitational pull?
Black Hole, Black Holes, Gravitational Pull, Heart, Sun, Unbelieveably
One Comment
The exterior gravitational field of any star or planet has the same strength as that of a black hole of the same mass. What make a black hole different from a star of the same mass is that its entire mass lies inside of the Schwarzshild radius that corresponds to that mass. Most of a star’s mass lies outside its Schwarzshild radius, and since the gravitational field of the star’s interior falls to zero as you reach the center, no event horizon is created.
(Apparently, at least two people have either misunderstood my answer, or have never done a physics problem involving the gravitational field of the interior of an extended body, as opposed to a point mass.)
Recent Posts
Recent Comments
Leave a reply