Hi, Ive been reading on the laws of gravitation, let me just say, WOW, how can a man like newton think of something that obscure. SHEESH! Anyways, I can see how each body gravitates with an equal and opposite force towards eachother. Now, if this is the case, how come the moon and the earth are at a distance appart. According to this they should have small accelerations towards eachother, and with time, they should increase the speed at which the get closer. If you consider the billions of years of our solar system, I wonder why they are not together yet. Also, if you look at the equation [tex]F_g = m_e *m* G / R_e^2 [/tex]. It equates this to w=mg. But i thought that this equation is used for point mass bodies, which my physics book says is the case in symetrical spherical bodies. Is it ok to use this equation in finding gravity of an object because it is so tiny in comparison to the size of the earth, it is a point particle too? Finally, the denominator causes some confusion. As the distance r from the earth gets bigger, the gravitation decreases. But if you are at the center of the earth, there should be zero gravitation, but this equation shows infinte gravitation, am i just using this equation outside of its limitations? Thanks for helping me.(adsbygoogle = window.adsbygoogle || []).push({});

Cheers,

Cyrus Abdollahi

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# Gravitation Help

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