, . 6. F . , , 1 , . ( ) , .
p p
ds
. 6
, , , .. , ds
dℓ = pFds = pdw
: F ;
ds .
(. . 7)
( = const)
ℓ = p (w2 w1)
(w = const) w2 = w1
ℓw = p 0 = 0
1 A
2
w1 w2 w
. 7
(.7) w1Aw2.
, .
(2.18.)
: |
, . 6. F . , , 1 , . ( ) , .
p p
ds . 6 , , , .. , ds dℓ = pFds = pdw : F ; ds . (. . 7) ( = const) ℓ = p (w2 w1) (w = const) w2 = w1 ℓw = p 0 = 0
1 A
2
w1 w2 w . 7 (.7) w1Aw2. , . (2.18.)
: 2015-09-20; !; : 565 | : : , . |