What forms the base for gravitationnal force o0f a body?
Answers:
Space is comprised of a mass of atoms spaced about 1cm apart.
The earth's atmosphere is nothing more than space that has been chemically acted upon by other elements and forces as it becomes compressed around the earth due to the forces of gravity. The earth's atmosphere will attempt to react in the same way that space does.
Fusion creates other elements and releses energy. It also releases the empty space which is a vacuum. An object like the earth will not allow a vacuum to exist so it compresses filling the vacuum. As the earth compresses it attempt to create a vacuum around its surface. Space, which is not a vacum, will not allow this to happen so it shifts towards the earth propelling everything along with it.
As an object approaches the earth, the compressed space has more mass and generates more propulsion on the object. The amount of force required to prevent the object from striking the surface is its weight and is actually a measurement of of the force of space pushing down on it.
Gravity is a space shift caused by compression.
The point of equilibrium ( centre of gravity)
mass is the central.
It's mass. Don't confuse it with weight.
The mass of a body.
It attracts another body from its center of mass.
I am not quite sure what you are asking but hope this helps.
Gravitational force is a positive force of attraction between two bodies. The Force is proportional to the product of the masses of the two bodies and inversely proportional to the distance between them squared. In equation form:
F = G x M x m/ r ^2 G is the constant of proportionality as is
known as the constant of gravitation.
Of course for two bodies we have to ask from where to where do we measure r? r is measured from the centre of mass or centre of gravity of the body. The cog is the point at which all of the body's mass is concentrated. There is a lot of standard maths for calculating exactly where cog is for different shapes and 3D bodies.
Gravitational force is one of the four fundamental forces of nature.
The above is Newton's model for gravitational force. Einstein's theory of general relativity introduced space-time and this provides another explanation for gravity. Ask again if this was what you were after.
I am assuming that you are asking for an answer to exactly what is gravity. It is normally defined as a weak universal force, which is only very noticeable when there is an object of considerable mass which will attract objects of lesser mass to it. In space outside of star systems, gravity would be far more noticeable as all things are subject to the gravitational forces of the nearby star (the sun) and the planets. The exact cause of the force of gravity has as far as I am aware not been firmly established. I believe it to be a distortion effect caused by large amounts of matter in close proximity to one another.
C_C got it right. The cause & mechanism of gravity is the subject of continuing research. We only know that it IS a feature of any mass, large or small, and how to predict its magnitude.
Try the higgs boson- a yet conjectural particle that mediates the gravitational force
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