What's causing graviety to all the planets, stars etc.,?

Question

graviety is different for different bodies and does graviety exists for a body thrown in to space...

Answer 1

Gravity is directly proportional to mass (how much "stuff" an object is made of).  The greater the mass the greater the gravitational pull.

There are four main forces in physics.  Strong nuclear, weak nuclear, electromagnetic and gravity.

Of the four gravity is far and away the weakest.  For instance a simple refrigerator magnet can overcome the force of gravity generated by the entire earth (use a fridge magnet to pick up a paper clip for instance...you just beat the earth's gravitational pull).  It is also the only force you cannot shield yourself from (e.g. you could put a lead wall up to shield you from electromagnetic radiation but gravity will not be stopped in this fashion).

In Quantum Mechanics they propose a force carrying particle for each of the four forces.  For gravity they call this particle the graviton.  This is the one particle they have not been able to measure.  It is so weak that no machines on earth have the power to spot it.  But it fits the models which otherwise work to stunning degrees of accuracy so they suspect it is there.

Answer 2

They just had this on tv and their theory on it was everything creates a certain amount of graviety . they said if u put two objects near each other and were to look at them in a billion yrs from now gravity would have moved them.. so my theory is if everything has graviety that would mean all matter is graviety and everything is made of matter then thats where gravity comes from, although this is only my theory. im sure there are other theories

Answer 3

just natural consequence of there size...

Answer 4

Everything has gravity and feels gravity and is affected by gravity, but most things that you experience on a daily basis are far to small for you to feel their gravity.

You feel the Earth's gravity because it is so big and because you are so close to it. The moon has gravity too, but it only has a proven effect on large bodies of free liquids - the oceans.

Gravity is an attraction of matter to other matter. The more matter, the more gravity there is in play.

Answer 5

Yes.

Gravity is a property of mass.

The greater the mass , the greater the pull.

Earths gravity is primarily the effect of its iron core.

If you throw an object , in space , it has its own gravity pull , that affects "smaller objects". untill it passes something that has a greater mass , then is pulled towards it.

Answer 6

i really can't understand the examples, like a magnet can lift a paper clip from a table with the earths gravity pulling against it.

isn't the gravity affecting the table, the house, everything else also, so maybe it is favoring the magnet a bit more?

if gravity is unstoppable (in what we know of it) is it also unmoveable?   question in physics

Answer 7

any object with a mass (m) has a gravitational force (F Newton) that affects every single mass in the universe.

but the force is affected by the distance (r) between the two masses.

example: Two masses (m1 and m2 ) are out there in space ,seperated by 10 meters.

Then the force they are attracted towards each other with is ::

__ F= (m1*m2*G)/r^2    

where G is called the gravitational constant and it never changes. search for its value if u want.