Where does gravity come from?

Question

Its one of the first things they teach you in physics class: Energy can neither be created nor destroyed, only converted from one form to another. Yet gravity seems to create energy out of nothing.

Is there an accepted answer for this question?

Answer 1

Einstein says that mass deforms space and that results in gravity. It is like a mattress that starts out flat, but when you put something massive on it, it causes a depression in the flat surface, and things will roll down toward the center of the depression. Of course, it is only "like" that - mass bends space not because of any "weight" but because mass and space are linked in that way.

Alternatively, the quantum, as opposed to the relativity, people are looking for the "graviton," a particle that would mediate gravity forces.

Answer 2

Ok. Scientists generally accept that gravity is caused by the deformation of space-time by mass.

So, any body with mass, you and I, the Earth, and the cup of tea in front of me possess a gravitational field. You and I and the cup of tea possess a relatively small mass, and therefore their gravitational effects are negligible. The Earth however is massive enough to have a much more significant influence of surrounding bodies.

Gravitational fields don't actually 'create' energy, which is why there is no contradiction with the conservation of energy / momentum laws.

Answer 3

Gravity comes from a nearby massive body like the earth. That was what was postulated by Sir Isaac Newton.

However when you are near to earth, you have some form of energy called gravitational potential energy. So when you fall towards the earth, that form of energy is then converted to kinetic energy of you moving towards it.

If the body near to the earth is 1 kg, then the gravitational potential energy of the earth on the 1 kg mass is called GRAVITATIONAL POTENTIAL (of the earth) while the energy possessed by the 1 kg mass is called the gravitational potential energy (belonging to the 1 kg mass).
I know that Physics students always struggle with these concepts as it is seldom stressed by Physics teachers, whose old Physics teachers seldom stressed to them....hehehehe

Summarising: gravitational potential is due to the mass of the earth,
gravitational potential energy belongs to the body positioned near the earth.

Answer 4

Gravity is a property of all massive material. It is communicatred through the Higgs boson.

Matter is a form of energy -- that annihilates your argument.

Answer 5

gravity is the result of matter in space
once matter is placed into empty space, it warps creating a gravitational field
note, gravity is not like electricity, electricity penetrates the field
gravity affects almost everything
imagine space as a fabric, you place the sun on it and it weighs down the fabric

Answer 6

Gravity come from everything, I think everything have gravity, we also have gravity, but ours is too small. In solar system, the larger planet own greater gravity. Gravity comes from everything centre.

Answer 7

every substance has energy inner due to the vibration of its atoms. two substance that full of energy pull each other. since the earth is a great substance, it pulls every little thing around it which includes energy. this is what we call gravity.

Answer 8

Gravity is a property of all mater. It is just very weak for ordinary objects and is only noticeable for planet or moon sized objects.

Answer 9

graviton exchange IE just like
like photon exchange
but without a quantized theory

Answer 10

it comes from the magnetic poles that suspend on earth . my question is how does the moon have gravity it does not revolve and does not have a magnetic poles . although if seems gravity less you can not walk on a surface if it has no gravity you would float away