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>> 10 . |
7.
51. ()
. , (7.2) , . , , , 7.2. :
, , , ? . , , , (. 7.4). , , . , α. s1 s2 , : s1 = α|| s2 = α||. , : 1 = F1α|BO|, (7.4)
, , . d. || = d1 1 = F1αd1, 2 = -F2αd2. (7.5) (7.5) , . , (7.5) 1 = 1α, 2 = 2 α, (7.6)
= 1 + 2 = (1 + 2)α. α, (7.7) = (1 - |2|)α. , . , . . ≠ 0 1 + 2 ≠ 0. , ( ) . 1 + 2 = 0. (7.8)
, :
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1. , . 2. ? 3. ?
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