what generates or makes gravity?

Answer 1

No one really knows. Newton's F = GMm/R^2 says that the force of gravity varies as the multiple of two masses (M and m) and inversely as the square of the distance (R) between the centers of the two masses. But, and this is a BIG BUT, his equation fails to indicate what actually makes gravity, the thing that tugs over a distance between the two masses to create a force.

To illustrate what I mean, imagine a transmitter and a receiver...they are the two masses so to speak. There is a distance R between them. We turn on the receiver and hear some cool sounds, clearly there is some force generated by the transmitter and received by the receiver. But in this case, we know how that force is transmitted over a distance...it's transmitted via electro-magnetic quanta (like photons) that serve as the messengers of that force.

In the case of gravity, we know we need two trans-ceivers (the two masses), but we have no clue what the messengers are that carry the force of gravity between them. Some WAGs propose a quantum called a graviton. They would be the messenger particles carrying the gravity forces. [See source.] But they've yet to be detected; so the graviton remains as one of the many untestable hypothesis of advanced physics.

So the answers replying that mass "generates" gravity are right because mass transmits gravity like transmitters transmit radio waves. But what makes gravity is still a mystery because no one has yet found the radio wave equivalent to gravity...that is, no one has yet uncovered gravitons.

Answer 2

This force, because it performs work, must have an energy source. Stephen Hawking in "A Brief History of Time," page 92, paragraph 3, states; "Like light, gravitational waves carry energy away from the objects that emit them." This concept requires that there be more than mass in order to form a field of gravity. The physics trilogy: E = mc2, m = E/c2, and c2 = E/m describes a field of gravity in the last equation. It is a energy/mass relationship. The energy in this instance is that of the heat contained within a mass. Were a mass to have no heat energy within, then it would have no field of gravity. http://360.yahoo.com/noddarc "Concepts Concerning Gravity, Time and Energy" may be of interest. An experiment was posted on http://youtube.com "Successful Gravity Experiment". The experiment had to be put on in sections and it takes time to put it together, but the end result is that a field of gravity is able to be formed and collapsed.

Answer 3

According to Physicists Gravity is the Result of Matter in accumulation.... that is Mass,..the Larger the Mass the larger the Gravitational force produced. According to Einstein Matter distorts the fabric of space...the larger or more massive a body is ...say a Planet for example...the more the planet Distorts the space around it Every physical particle has mass...and as a result has a particular space distorting effect...the smaller the particle the less the distortion ...All Mass is an accumulation of smaller particles...subatomic..then atomic...all the way up to the Macro or Extremely massive Planets...stars and Everything else that you see. Gravity is the result of Matter the more matter you have accumulated in one place the more gravity or space distortion ...will be experienced....I hope this helps...

Answer 4

In my opinion gravity is just a reaction force.
consider the example taken from the book written by einstein, that if a person is on a some sort of floor in the space where there is no body nearby, the person cannot feel any gravity. but if the floor is pulled upwards by some force, then the person's body will try to move downwards due to its inertia. that is why it can be said that gravity is casued by inertia i-e mass. imagine if the person dont know that it is a reaction force which his body is experiencing, how can he explain that force then?
he can say that it is the force of gravity casued by inertial masses, that would also be correct.

Answer 5

Mass. The larger the mass the greater the gravity.

Answer 6

According the Isaac Newton, the force of gravity is an attraction force that is directly proportional to the mass of the two objects being attracted and inversely proportional to the square of the distance between them. So as the objects separate, the force becomes significantly less.

Newtons Law of Universal Gravitation is
Fg=[G(m1)(m2)]/d^2

G=6.67e-11 (N*m^2)/kg^2
It is the gravitational constant.
Also m1=mass of object 1
m2=mass of object 2
d=distance between the two objects.

Answer 7

What generates gravity is mass. As to exactly why, this is something you can get a Nobel prize in physics if you can tell us.

Answer 8

Our planet has its own gravatational pull, as does every other large mass in space. The gravity is different for every object. The sun has such a great gravatational pull that 8 planets orbit it.

Answer 9

every action has an equal and opposite reaction.so same way gravity is the force generated by earth in response to the force exerted by us and other objects on earth.

Answer 10

hello,i see that all have answred that gravity is generated by mass but thats just one of the factors,another factor is that at the centre of the earth there is a hot iron ball that keeps rotating this iron ball produces gravity....for a moment if u go at he centre of that iron ball(virtually impossible)u will experience zero gravity.....