How do we know Newton gravity constant is not changing with time?
2006-08-23 05:36:23 · 3 answers · asked by goring 6 in Science & Mathematics ➔ Physics
Note =the dimensions of the Gravity constant is=
G=meter^3 / Kg *seconds^2
2006-08-23 05:46:34 · update #1
Newton made a mistake. He assumed that all mass had the power of attraction of all other masses. He did not ascribe an energy source for this force. There is a physics trilogy that covers the basis of our existence. It is: E = mc2, m = E/c2, and c2 = E/m. It is the last equation we are interested in. This describes the force of gravity, or a field of physical time - they are the same.
Notice as either the mass or energy change so, also, does the product of the two. Were a mass the size of our planet to have no heat energy within, then it would have no gravitational field. Were the heat energy within our planet to increase, then the gravitational field would proportionately increase.
This force is unable to compounded in such manner that a mass is able to be compressed (as in the black hole, and big bang concepts) and as the mass compresses so, also, does the gravitational field.
The is a writing at http://360.yahoo.com/noddarc that explains this in a few pages "The Problem and Repair of Relativity". The last part of this writing explains Newton's problem.
2006-08-23 11:09:57 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Newtons gravity constant G is called a constant because it Is a CONSTANT
a constant does not depend on anything
2006-08-23 12:57:32 · answer #2 · answered by Prakash 4 · 1⤊ 0⤋
Newton gravity is not constant. It varies on the surface of the earth. Also it is proportional to the height. g = g0 / r^2 roughly this is the formulae. for exacteness refer text books.
2006-08-23 12:39:59 · answer #3 · answered by Dr M 5 · 1⤊ 0⤋