????????? (??DE)

1
????????? (??DE)
?e???d??? fa???µe?? a????s?? ?a? pt?s?? t??
ep?f??e?a? t?? ???assa?. ????a?e?ta? ap? t??
???? ???????? s?µ?t?? ?a? t?? ????s? t?? ???.
2
EARTH MOON AROUND SUN
3
????S???F? S?????S ????S? G?S
4
NEWTON S LAW OF GRAVITY
F ???? µeta?? d?? s?µ?t?? m1, m2 ???a d??
s?µ?t?? r ?p?stas? µeta?? t?? d?? s?µ?t?? G
Universal Gravitational Constant G6.6 x 10-11
Nm2/kg2
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????????S? ????????S
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????????S

1. ?e?? ?a??pte? ??? t?? ep?f??e?a t?? ??? (sta?e??
   ß????)
2. ?? ?e?? de? ??e? ad???e?a
3. ?? ?e?? ß??s?eta? se ?s????p?a

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G?? ?S??????? ????S?
K?-s
r
G? Se???? pe??st??f??ta? ???? ap? s?µe?? ??-s
p?? ß??s?eta? ap?stas? r ap? t? ???t?? t??
???. ???e s?µat?d?? p??? st? ?? pe??st??feta? se
????? µe t?? ?d?a a?t??a ?a? t?? ?d?a pe???d? (r
?a? ?2p/?). Se ???e s?µat?d?? p??? st? ??
as?e?ta? f????e?t??? d??aµ? (ep?t????s?) ???? t??
p?? p??? ???????? t??????. (ast??ß??? ????s?
a???e?ta? pe??st??f? t?? ??? ???? ap? t?? ea?t?
t??)
8
F?G???????S ????????S?
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???????? F?G???????S ????????S?
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???????S
G
?
?
?
???aµ? ????? ßa??t?ta? ?a? f????e?t??? d??aµ?
p???a???? a????s? t?? st??µ?? ?e??? a?????? p???
?a? a?t??eta µe t? se???? (? ?a? ?) ?a? pt?s?
???eta st?? ????a G?-Se???? (G ?a? ?).
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????S???F? S?????S ????S? G?S
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????S???F? G?S