If gravity slows time would not it take forever to enter a black hole?

Question

does gravity really slow time and since black holes have tremendous gravity how would this effect time if you were approaching one ?

Answer 1

Good question.  Still debated.  Outside a Black Hole the escape velocity is still less than the speed of light so time still runs. What is outside is pulled in. At the event horizon (point where escape velocity exactly equals speed of light ) time stops.  This implies that you get pulled in but never reach the surface.

Of course, there is no surface to reach.

Answer 2

It is not really known. Some parts are true though, a black hole, along with anything with mass, will affect space, and thus time (time is relevant to space, space-time, thanks to Einstein). So If one person standing outside the blackhole with a clock, was looking at one person inside the black hole with a clock, the person outside would see the other's clock ticking alot slower, more and more slower the further they go. However, the person inside the black hole would see time tick normally. Eventually, it will reach the singularity, the point of infinite gravity; when it reaches this the object will eventually just stop all together (to the observer outside), and then, as the object is stretched by the immense gravity, it becomes reder because the light is pulled. Then the object fades away in the singularity, only to become particles of hawking radiation. Here is a good link for black holes, and astronomy in general:

http://www.astronomycast.com/black-holes...

and

http://www.astronomycast.com/questions/e...

Answer 3

I solve all my problems by putting my friends in blocks of cement

I think you should to

Answer 4

I believe that time in this case is relative to the speed of objects involved.

It would seem very slow as the objects involved could be very far apart and could be very large.

I once read but can't remember where our planet is rotating at about 24000 miles per hour, our solar system is moving around its orbit in the Milky Way at several 10's of thousand of miles per hour and  the Milky Way is moving through space with other galaxies at many more 10' of thousands of miles per hour.  These added together seemed to be more than the speed of light.

Also, some binary stars seem to rotate around each other at faster than the speed of light.

The event horizon is the point at which light or objects become trapped and no longer seen.  The event horizon is similar to the sound barrier for planes, once reached speed can still increase.

Answer 5

not for you. an outside observer would see that you were stuck just inside the event horizon forever. but that really doesnt matter, because they cant see inside the event horizon anyways.

this is where it gets strange. before i said not for you, but only to an outside observer. from your point of view you would continue in towards the singularity forever.

Answer 6

Good question.  I've given it some thought myself, but to provide you with a more lucid answer than I could rattle off the top of my head, here's some copypasta from wikipedia:

"An object in a gravitational field experiences a slowing down of time, called gravitational time dilation, relative to observers outside the field. The outside observer will see that physical processes in the object, including clocks, appear to run slowly. As a test object approaches the event horizon, its gravitational time dilation (as measured by an observer far from the hole) would approach infinity.

From the viewpoint of a distant observer, an object falling into a black hole appears to slow down, approaching but never quite reaching the event horizon: and it appears to become redder and dimmer, because of the extreme gravitational red shift caused by the gravity of the black hole. Eventually, the falling object becomes so dim that it can no longer be seen, at a point just before it reaches the event horizon. All of this is a consequence of time dilation: the object's movement is one of the processes that appear to run slower and slower, and the time dilation effect is more significant than the acceleration due to gravity; the frequency of light from the object appears to decrease, making it look redder, because the light appears to complete fewer cycles per "tick" of the observer's clock; lower-frequency light has less energy and therefore appears dimmer, as well as redder.

From the viewpoint of the falling object, distant objects generally appear blue-shifted due the gravitational field of the black hole. This effect may be partly (or even entirely) negated by the red shift caused by the velocity of the infalling object with respect to the object in the distance."

I can't argue with anything in this article.

Answer 7

And the other problem is that time is relative.

To an outside observer maybe you would appear to go slower and slower but you would not notice any difference as time would appear normal to you.