How does gravity work?<br /><br />"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.<br />The standard formula for gravity is:<br /><br />Gravitational force = (G * m1 * m2) / (d2)<br />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.<br /><br />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."<br /><br />So now you can imagine gravity effect between atoms or electrons (elements with mass) even more minuscule force will be. <br /><br /><br />
How strong is the strong force?<br />"We can compare the strength of the gravitational force to the electromagnetic force on two electrons by taking the ratio between the two forces. The distance-squared cancels out and we are left with:<br /><br />F(gravity)/F(EM) = Gmm/Cee.<br /><br />I intentionally dropped the minus sign; I will simply remember that the gravitional force between the electrons is attractive and the electromagnetic force between the two electrons is replusive. Anyway, when I plug in the values for G, m, C, and e, the ratio is 2.4x10^(-43). In words that is pronounced two-point-four times ten to the minus forty-three. That is a very small number. In other words, the gravitational force between two electrons is feeble compared to the elec