what causes gravity?

Answer 1

mass. anything that has mass warps the space around it. the more mass something has the more it will warp gravity. so a planet or a star warps it alot.

picture space as a trampoline and then sun as a bowling ball. if you put the bowling ball on a trampoline it makes it sag. if you were to place a tennis ball on the trampoline to represent earth it would roll towards the sun. if you were to roll the ball at a certain speed it would orbit the bowling ball for a second and then friction would slow it down and it would fall into the bowling ball. in space there is virtually 0 friction, so the earth doesnt slow down so it continues to orbit the sun.

the earth turning has NOTHING to do with its gravity.

Answer 2

gravity is due to mass....anything that has mass,even a feather has gravity of its own. but gravity is actually the attractive relationship between two bodies.

our good old man Newton concluded way back that "gravity is the force of attraction between two bodies and the force's magnitude is proportional to the product of the two masses and inversely proportional to the square of the distance between them" ... imagine,he made this statement after an apple fell on him!!! haha...(seriously,its an urban legend.an apple never fell on him)

so that means each and every thing on earth has gravity of its own. but i toldja,its the mass that counts...earth has more mass than everything on earth put together. suppose a cat is falling off a building,hes actually dealing with the wrong guy. the whole of earths mass comes into newtons equation and therfore the force on the unfortunate cat is a real large quantity....thats why hes falling in the first place!!!! (he survived by the way...)

it has nothing to do with the earth's spin or rotation or "time warping" or "string theory"...it becomes much more complicated... if u consider these then we are dealing with einstein not newton,and i believe newton is an easier chapter in your physics text book than einstein...(yeah einstein!!!! you suck!!!! ur killing children all over the world!!!)

Answer 3

The mass of the earth. The more massive an object is, the more gravity it has. Therefore, the planet Jupiter has a lot more gravity then does Earth.

Answer 4

Matter causes gravity. All matter has gravity. How, exactly, isn´t fully understood but gravity is generally thought of as a curvature in space/time. Why gravity is the weakest of natures forces is not fully undesrtoos either but the answer may lie in quantum/string theory.

Answer 5

Gravity is a natural phenomenon by which all objects with mass attract each other. In everyday life, gravitation is most familiar as the agency that moves objects with weight. It is responsible for keeping the Earth and the other planets in their orbits around the Sun; for keeping the Moon in its orbit around the Earth, for the formation of tides; for convection (by which hot fluids rise); for heating the interiors of forming stars and planets to very high temperatures; and for various other phenomena that we observe. Gravitation is also the reason for the very existence of the Earth, the Sun, and most macroscopic objects in the universe; without it, matter would not have coalesced into these large masses and life, as we know it, would not exist.

Answer 6

When two masses interact with each other forces are born. It was Sir Issac Newton who established the relationship of this interaction and the Value of the force between the masses. He called this the force of Gravity(weight). He discovered that the procuct of the Weight of a Mass on Earth and the distance square between the interacting masses divided by the product of the masses was Equal to a CONSTANT.To day we assign to it the symbol "G".It is refered to as Newton Universal Gravitational Constant.

Dr. Albert Einstein developed a Field Equation to explain Gravity as a Pressure of Space. The equation Generally relates the Energy per Unit volume of Space , to the curvature of a Space manifold which represents the Gravitational phenomena.
The Field equation is written in terms of Tensors which represent the curvature of space as being proportional to the Stress energy Tensor of space.
The Ratio of the Space curvature Tensor and the Stress energy Tensor is Equal to a Constant. This Constant is related to none other than "Newton UNiversal Gravitational constant"
Neverthe less Neither Newton or Einstein ever Gave a mechanism of Gravity.
IFneither explained it ,How come you want to know ?

A more plausible explanation is to assume that there is a mechanism that causes motion.
Einstein proved in his General Theory of Relativity that the Universe is a finite entiy. If the Universe is finite then it must have constrains to maintain it in its Containment.
If the Universe has its volume constrained ,than the substance of space is subjected Under pressure.
Hence, it is the Power locked in the Substance of Space that causes all motion of all celestial bodies in the Universe. It causes all masses to lock together in the shape that we observe them to be. This tendency to push all masses
( micro and macromasses)together is the Phenomenon that we call Gravity.
If the UNiverse did not have any constrains there would be no motion nor Gravity Power to make us stick to the ground.

This is my simplest way to describe the mechanism and cause of Gravity without mathematical formalism.

Answer 7

Since gravity causes space to warp, you can look to what the key factors are of mass. The nucleus contains 99.97 percent of the mass of an atom, but its 10 e-5 times as big as the diameter of an atom. So this leads to an incongruently of where most of the mass is. The strong force acts with the electromagnetic force should have most of the force of gravity associated with it….

Answer 8

gravity is a force, and all forces are caused by the attraction of two masses,
say you drop a pen in midair, the earth is attracted to the pen and the pen is attracted to the earth. However, because the earth is hugely more massive than the pen, then the pen moves faster and thus it seems that the pen falls to the earth, and you have gravity, tah dah!!

as far as i know, it has nothing to do with the earth spining.

Answer 9

ANY mass in motion in space has its own gravitational pull. the faster the object is moving, and the larger the object is, the greater gravity it creates

Answer 10

well because the earth is soo massive, then it has a gravitational pull. jupiters gravity is stronger because it is bigger