How many types of earth gravity force?

Answer 1

Just one.

And gravity is *not* a force!! It is an acceleration. It only becomes a force when it acts on a mass.


Doug

Answer 2

gravity or force of gravity depends on mass of the object. objects with greater mass have greater gravity pull. earth is the heaviest object in the space surrounding it where its own force of gravity is felt. By defenition each and every object have gravity upto a particular level and a particular distance. but on the earth the prominant gravitational force to say is only that of earth

Answer 3

To answer your question you need to understand concept of gravity:

Gravity is a common force. Newton was the first person to study it seriously, and he came up with the law of universal gravitation:

Each particle of matter attracts every other particle with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
The standard formula for gravity is:

Gravitational force = (G * m1 * m2) / (d2)
where G is the gravitational constant, m1 and m2 are the masses of the two objects for which you are calculating the force, and d is the distance between the centers of gravity of the two masses.

G has the value of 6.67 x 10E-8 dyne * cm2/gm2. That means that if you put two 1-gram objects 1 centimeter apart from one another, they will attract each other with the force of 6.67 x 10E-8 dyne. A dyne is equal to about 0.001 gram weight, meaning that if you have a dyne of force available, it can lift 0.001 grams in Earth's gravitational field. So 6.67 x 10E-8 dyne is a miniscule force. When you deal with massive bodies like the Earth, however, which has a mass of 6E+24 kilograms (see this Question of the Day), it adds up to a rather powerful force. It is also interesting to think about the fact that every atom attracts every other atom in the universe in some small way!

Einstein later came along and redefined gravity, so there are now two models -- Newtonian and Einsteinian. Einsteinian gravitational theory has features that allow it to predict the motion of light around very massive objects and several other interesting phenomena. According to Encyclopedia Britannica:

The general theory of relativity addresses the problem of gravity and that of nonuniform, or accelerated, motion. In one of his famous thought-experiments, Einstein showed that it is not possible to distinguish between an inertial frame of reference in a gravitational field and an accelerated frame of reference. That is, an observer in a closed space capsule who found himself pressing down on his seat could not tell whether he and the capsule were at rest in a gravitational field, or whether he and the capsule were undergoing acceleration. From this principle of equivalence, Einstein moved to a geometric interpretation of gravitation. The presence of mass or concentrated energy causes a local curvature in the space-time continuum. This curvature is such that the inertial paths of bodies are no longer straight lines but some form of curved (orbital) path, and this acceleration is what is called gravitation.
If certain assumptions and simplifications are made, Einstein's equations handle Newtonian gravity as a subset.

ANSWER: There is a gravitational force between any two objects however because the Earth is massive it has the most effect on objects on Earth and is measured at 9.8m/s^2.

Answer 4

the gravity is a kind of acceleration and it has slight variety by the different position on earth, but there is only one gravity on earth.

Answer 5

there is only one force of gravity....its nothing but the weight of an object. W = mg.

Answer 6

There is no gravity in this world.

The world sucks.

Answer 7

1 obviosly though there are other similar thing like friction and drag which slow us down