what is gravity?

Question

although there are lots of answers to this question no one seems to know what gravity is?

Answer 1

It is one of the four fundamental forces of the universe, resulting when matter bends the spacetime around it. Gravity causes all matter in the universe to experience attraction to all other matter in the universe. The strength of attraction is inversely proportional to the square of the distance between the centers of mass.

The exact details of gravity are not yet known. I still don't think the graviton has ever been directly observed or proven.

Answer 2

Gravity is a vacuum. it is the space between the sub atomic particles that fill our universe. The decay of particles around an object creates a larger gravity field thus "sucking in" objcts around it. creating a process of deaying and reintegrating matter into an object. The greater the object the more particles it has around it. It is the opposite of the "Big bang" which will occur again when all the universes particles crush into a singularity and thereby exstiguishing gravity. Once gravity is exiguished the big bang occurrs again and expands our universe

Answer 3

I haven't read all the answers on here, so apologies if someone has already said this.
Imagine a net or a sheet, similar to a trampoline, with a grid on it, with the corners of each square exactly the same distance from one another. If one were to add a large sphere, like the sun, in the centre, it will stretch the net slightly, but not so much to break it. If one placed a smaller sphere, such as a pea or ping-pong ball beside, but not touching the other sphere, it will roll towards it, until it hits it. Imagine this in three dimensions and you have gravity.
Gravity is a warp in space-time. Because everyone has mass, each person is a very small warp in space-time. Maybe this is a good way to help people lose weight? "You're breaking space".

Answer 4

Gravity is the force of attraction between two or more objects. Newton's law of gravity states that two masses M1 and M2 attract each other with a force F = M1.M2/r^2 where r is the distance between their centres of gravity.

Gravity is a long range force. At the most basic level, it is still not clearly understood.

Answer 5

i wish i was smart enough to know the answer to that. no i dont. it would be to heavy. did you know that einstein was famous for "the relitivity of gravity" and before him the first person to make a gander at it was newton in the 1700's. " i believe" it was the roswell insident with the ufo that brought us were we are today with gravity, velcro, wd40 aluminum foil and all the cool things we have aquirred since then. if you research it there was very little development or technology before the crash. gravity is one of the most awsome elements known to man. imagine from birth to death we are held down by the slightest weight. we dont feel it per say. but look at wrinkles the longer we are here on earth the more wrinkles we have. age to us is age. but we look at someone and can tell how old they are when really we can see how long they have been held down on earth by gravity. ck out einstein's relitivity of gravity then ck out what scientist up to date have discovered. we have yet to see things the way we truley can. again its all quit heavy

Answer 6

1. gravitational force: the attraction due to gravitation that the Earth or another astronomical object exerts on an object on or near its surface


2. physics
Same as gravitation (sense 2)


3. seriousness: the seriousness of something considered in terms of its unfavorable consequences
regarded it as a matter of the utmost gravity


4. serious behavior: solemnity and seriousness in somebody's attitude or behavior


5. heaviness: the quality of being heavy


6. weight: the amount that something weighs ( formal )

Answer 7

According to Einstein, gravity is an effect of the warping of space time, it's not, as most of us assume, a kind of magnetic force pulling things together.

Imagine that you and I are holding a rubber sheet between us, pulling it taut. Someone comes along and places a heavy ball in the centre. The sheet will dip slightly in the area the ball is sitting. Then if you imagine rolling a smaller ball toward the big one, it will kind of fall into the dip that the larger ball has made.

So, if the rubber sheet represents space-time, the big ball our sun and the smaller the earth, this is kind of how gravity works. Very large objects of mass cause space time to warp, and smaller objects will fall into that dip. But because, according to Newtons law of motion, the earth will attempt to continue moving through space (as all objects in a vacuum will) then the earth finds itself travelling in an orbit - unable to fall in yet unable to continue travelling through space.

Actually, all objects of mass cause space-time to warp (even you and me) but the effects are only evident when the objects are very large.

Answer 8

The force of gravity is a particular form of energy. It is described in the physics trilogy: E = mc2, m = E/c2, and c2 = E/m. The last equation is that for a field of physical time, or that of a field of gravity. It is a mass to energy relationship (heat) within a solar mass. The greater the energy, the greater the gravitational force.

There is a short, easy to read writing at http://360.yahoo.com/noddarc that may be of interest to you. It is, "Concepts of Time, Energy, and Gravity".

Answer 9

gravity is the force that pulls objects towards each other.

Answer 10

Gravity is the force that pushes an object toward the ground.