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<DIV>Hello Tom,</DIV>
<DIV> </DIV>
<DIV>Thank you for your explanation.</DIV>
<DIV> </DIV>
<DIV>I think there is a little mistake in your calculation :</DIV>
<DIV> </DIV>
<DIV>you write : </DIV>
<DIV>> <FONT face="Courier New">The acceleration which an object of mass =
100Kg imparts to another mass at 20 metres is :-a = 6.674e-11 * 100 / 20^2 =
0.000000000016685 M/s^2</FONT></DIV>
<DIV><FONT face="Courier New"><FONT face=Calibri></FONT></FONT> </DIV>
<DIV><FONT face="Courier New"><FONT face=Calibri>In the case of an object, 100
kg for example, at 20 m from the SURFACE of the Earth, calculation of
acceleration should be calculated from both CENTERS OF
GRAVITY:</FONT></FONT></DIV>
<DIV>a = 6.674e-11 * 100 / (<FONT size=5>6371020</FONT>+20) ^2 = 0.<FONT
size=5>00000000000</FONT>000000000016 M/s^2</DIV>
<DIV> </DIV>
<DIV><FONT face="Courier New"><FONT
face="Courier New"></FONT></FONT> </DIV>
<DIV><FONT face="Courier New"><FONT face=Calibri>It should not change your
conclusion, and even enhance it !!!</FONT></FONT></DIV>
<DIV> </DIV>
<DIV>Do you agree with my comment ?</DIV>
<DIV> </DIV>
<DIV>Best regards</DIV>
<DIV>Olivier</DIV></DIV></DIV></BODY></HTML>