Gravity is not caused by Mass alone..then?

Question

In many places it is suggested that mass causes gravity. But this is not really true, since Mars and Jupiter (planets) which have massive mass, do not have that much gravity.
So, what is causing gravity, if not mass ?

As per einstein's theory, mass can be converted to energy, when that happens... where does gravity of that mass vanish (if we say gravity is caused by mass).

Answer 1

Gravity is caused by mass alone (and distance but thats not the point here).
Mars and Earth have diameters of 6775 and 12775 km respectively. The mass of Mars is 0.107 times that of Earth so its logical that gravity on Mars is less than on Earth.
Mass of Jupiter is greater that Earth, so gravity is more.

Gravity on Mars is 0.3 times the gravity on Earth
Gravity on Jupiter is 2.5 times gravity on Earth

Allso, Jupiter is a lot bigger then earth, but its gravity isnt as high as you would expect judging by its size (only 2,5 times earth gravity), thats because Jupiter is mainly gaseous and its density is low. Compared to its size, its mass is relatively low (in comparison to solid mass planets like Earth)

Answer 2

Gravity caused by mass. Actually its the other way around.
We need to understand what mass is. First it must be a volume which form a structure and each struture have a particular architecture.There much exist in the Universe a particle which is responsible for assembling all the masses into atomic structure.
Therefore it must be a particle which we call massless that is responsible for carrying all energy which we call gravity which includes electrical and magnetic energy.
This lead into a theory of Unification of Power and Energy of the substance of space.
It is that substance of space which is the cause of Gravity.
Einstein's General Relativity describes how the field of space gets compressed in term of a geometrical curvature in the vicinity of a mass structure.However no Gravity mechanism is described In General Relativity Theory.
Note about mass geting converted to energy=mass does not get converted into Energy this is view is really misunderstanding Einstein.Mass does not get converted it just gets resttructured due to energy changes.
The Big Bang Theory call this the PREMORDIAL MASS.

Answer 3

Mars is smaller than the Earth. Jupiter is much larger, and it's Gravity is MUCH higher than that of the Earth. I don't know who's been telling you Jupiter has less gravity, but they couldn't be more wrong.

The reason you don't get sucked off the surface of the Earth towards Jupiter is the amount of distance between the two planets. The force of gravity falls off as a square of the distance. In other words, if you move two objects twice as far apart, the force trying to pull them back together drops to one fourth of what it was.

Everything with mass has gravity. right down to individual atoms. YOU have gravity, just not very much. Gravity is a very weak force.

Answer 4

Gravity is effected by Mass. In his Law of Universal Gravitation, Newton came up with the formula:
Fgrav = G(m1.m2)/d^2,
where G is a constant called the graviational constant, m1 and m2 are the masses of two objects (which could be anything...planets, cars, etc), while d is the perpendicular distance between the centre of mass of the two bodies.

You are hence wrong in your supposition.

Mars has a lower (surface) gravitational field strength "g" (the force of gravity between a 1kg object and the planet in question) since it has a smaller mass than the Earth. (6.4191 × 10^23 kg against Earth's 5.9742 × 10^24 kg) ("g" on earth is 9.81N/kg, "g" on Mars is 3.7N/kg).

Saturn has a not so high "g" (23.15N/kg) - with respect to the value of "g" on Earth - due to its huge diameter. Despite having a bigger mass than Earth (1.8987 × 10^27 kg), it also has a bigger radius (71 492 km) than Earth (6 378 km). So, this larger distance reduces the effect of gravitational pull on a body on Jupiter's planet since the value of "d" in the above equation would be large.

To have a fair comparison, we should lift a 1kg object a distance of 65,564km from Earth, and see which force pulls the most - in this way you eliminate the distance factor.

Answer 5

The prevailing idea is that mass distorts space-time much the way a bowling ball would distort your bedsheets. The curve mass creates in space causes other masses to fall toward the center of the distortion. There is a hypothesized particle called a graviton. This would be a particle that all mass emits and it in someway sends out the attraction force, like magnetism. This particle has not been discovered and there is no solid proof of it's existence.

Answer 6

the mass of mars is less than earths and mass of jupiter is greater than earths. the force of gravity would be less on mars and greater on jupiter.

Answer 7

gravity is d combined effect of mass multiplied by acceleration

Answer 8

"Massive Mass". I like that.

But yes, gravity is related to mass.