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Because the Theory of Everything, which seeks to link gravity to electromagnetism, has not been discovered.

2007-05-25 05:15:58 · answer #1 · answered by -_- 2 · 0 0

If you had enough static electricity to be useful in controlling gravity then there is enough electricity to cause some severe shocks. I am guessing you are talking about controlling gravity as in creating an artificial gravity in space or some other type of altering how gravity affects an object. Also, I am figuring that you are talking about static electrity because of how stuff that is charged with static will cling to other items.

2007-05-25 12:18:06 · answer #2 · answered by A.Mercer 7 · 0 0

Because it is irrelevant. Gravitation is unformly attractive - it cannot be mediated by a vector boson.

The source of monopole radiation is a changing monopole moment for a charge q or for a mass m. Since charge and mass are conserved, there can be neither monopole electromagnetic radiation nor monopole gravitational radiation.

The source of dipole radiation is a changing dipole moment. (Punctiliously, you need a second time derivative of the dipole moment.) For a pair of charges

d = qr + q'r'

and there's nothing special about the derivatives. For a pair of masses, the gravitational dipole moment is

d = mr + m'r'

and its time derivative is

mv + m'v' = p + p'

By conservation of momentum the second time derivative of the gravitational dipole moment is zero, and you can go to a center of momentum frame and set the first derivative to zero as well. There is no gravitational "electric dipole" radiation.

Consider the analog of "magnetic dipole" radiation. The gravitational equivalent of the magnetic dipole moment for a pair of charges is

M = mv x r + m'v' x r'
("x" is the cross product, "mv" is the "mass current")

But M is the total angular momentum, which is also conserved. There is no gravitational "magnetic dipole" radiation.

The next moment up is quadrupole, with no relevant conservation laws, so gravitational quadrupole radiation is permitted. You can use this argument to advocate that gravity must be a tensorial (spin-2) interaction. Electromagnetism is mediated by spin-1 photons.

2007-05-25 12:16:20 · answer #3 · answered by Uncle Al 5 · 1 0

Propetual Motion machines use it to control gravity.

2007-05-25 12:28:54 · answer #4 · answered by Grant d 4 · 0 0

Because gravity is not affected by anything except the simple presence of mass.

2007-05-25 12:13:30 · answer #5 · answered by Anonymous · 2 1

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