what is the reason of gravitational force?

Question

I had read that there is exchange of particle GRAVITON is that right?

Answer 1

Graviton are a hypothetical elementary particle! Scientists say if it exists it is massless...
All mass disturbs the spacetime continuum, or *curves space*
it is more noticable around heavy masses like black holes where space is so curved that time actually slows down!

Answer 2

The force of gravity does require a particular form of energy to cause it to come into existence. The formation of this force is part of the physics trilogy: E = mc2, m = E/c2, and c2 = E/m. The last is that of a field of gravity. Stephen Hawking in “A Brief History of Time,” page 92, paragraph 3, states; “Like light, gravitational waves carry energy away from the objects that emit them.”

An energy source is needed in order to perform work, and in that the force of gravity performs work, there must be an expenditure of energy in some manner.

http://360.yahoo.com/noddarc click on "list view" and scroll down, there is a short paper "An Experiment You Can Help With" that may be of interest. There is also a manner by which a gravitational field was formed and collapsed using a beam to indicate the energy change.

Answer 3

The reason for gravity is not understood. We do not yet have a coherent quantum theory of gravity.

We know that quantum physics dictates that there be some particle that mediates the gravitational force (just like any other force). We call it (or we will call it if we ever detect one) the graviton.

Answer 4

Isaac Newton's theory of universal gravitation states the following:

Every single point mass attracts every other point mass by a force heading along the line combining the two. The force is proportional to the product of the two masses and inversely proportional to the square of the distance between the point masses:

F is the magnitude of the gravitational force between the two point masses
G is the gravitational constant
m1 is the mass of the first point mass
m2 is the mass of the second point mass
r is the distance between the two point masses
Assuming SI units, F is measured in newtons (N), m1 and m2 in kilograms (kg), r in metres (m), and the constant G is approximately equal to 6.67 × 10−11 N m2 kg−

Answer 5

Newton's law of universal gravitation

Isaac Newton's theory of universal gravitation states the following:

Every single point mass attracts every other point mass by a force heading along the line combining the two. The force is proportional to the product of the two masses and inversely proportional to the square of the distance between the point masses:

F is the magnitude of the gravitational force between the two point masses
G is the gravitational constant
m1 is the mass of the first point mass
m2 is the mass of the second point mass
r is the distance between the two point masses
Assuming SI units, F is measured in newtons (N), m1 and m2 in kilograms (kg), r in metres (m), and the constant G is approximately equal to 6.67 × 10−11 N m2 kg−2.

Answer 6

If two body approach each other force attracts each other proportional to their mass but inversely proportional to the square of the distance between the two objects. As earth is too big as comparision to materials of the world, all substances attracts towards earth, which is called gravitational force.

Answer 7

Any mass of body exerts some force of attraction on another body directly proportional to the individual mass and inversely proportional to the square of the distance between them. Gravitation is the force of attraction exerted on any body by the earth (another mass of body) towards its centre.

Answer 8

there is no exchange of particles . it is an external effect in which no contact is produced between the two bodies.

Answer 9

Simple.World is rotating, it is true.When a thing got rotated, there will a force. The force is nothing but gravitation.

Answer 10

magnet inside the earth is the reason of the gravitational force remember it.......................................