- #1
gaurav_shade
- 6
- 0
Keeping the mass constant, if we go on increasing the density of a body
its gravity also goes on increasing, like what happens in a black hole,O.K.?
But according to the formula F=Gmm/r(square) , only the mass of the 2 bodies is taken into consideration...
Suppose 2 spheres are kept at a fixed distance,there would be a certain force acting
along their centres...
Now, keeping distance{r} and their masses
constant if we increase their density,
the gravitational force would obviously increase,
but if we use the formula we would still get the previous result, as the mass and
distance are still the same
in simpler words...
suppose two stars are revolving a around a common centre of mass,
as most of them do...neither sucks the other's gas...
but, if one of them them becomes a black hole, it would start sucking the other
{as you already know, that's how they are detected}
Conclusion:- Although the mass remains same{decreased to be precise,as the outer layers are shed off}, its gravity shows a substantial rise.
If I were to shrink this Earth to suitable volume{hypothetical},it would become a black hole and start sucking the sun itself.
its gravity also goes on increasing, like what happens in a black hole,O.K.?
But according to the formula F=Gmm/r(square) , only the mass of the 2 bodies is taken into consideration...
Suppose 2 spheres are kept at a fixed distance,there would be a certain force acting
along their centres...
Now, keeping distance{r} and their masses
constant if we increase their density,
the gravitational force would obviously increase,
but if we use the formula we would still get the previous result, as the mass and
distance are still the same
in simpler words...
suppose two stars are revolving a around a common centre of mass,
as most of them do...neither sucks the other's gas...
but, if one of them them becomes a black hole, it would start sucking the other
{as you already know, that's how they are detected}
Conclusion:- Although the mass remains same{decreased to be precise,as the outer layers are shed off}, its gravity shows a substantial rise.
If I were to shrink this Earth to suitable volume{hypothetical},it would become a black hole and start sucking the sun itself.