1. .
2. .
3. .
4. .
5. , .
6. .
, . , . , . ,
F =, , G __________________ G= 6,67 10-11 2/2
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( ). ___________________. . g = f/m, , f = mg. _____________ _______________.
________ ________/2.
. , _________________________
______________________________________ _________________________________________
(. 5). .
1 .
, . , , (. 6): = N = mg.
, , (. 7, ).
OX:
N =
,
=
, : =,
. . .
, =
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_________________________________________. __________________________________
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7.: 20 0,5 /2. ?
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