, 60100 , . , , , . .
, . .7.5.
, ,
(7.16) (7.16)
|
|
t = 0, h = 0.
(7.16) :
1) N (N - ) , ;
2) N , ;
F , b, . , ,
(7.17)
Ni ; N , ; 0 (0 = 1,4); l ; S z .
, (7.18)
g - .
:
(7.19)
(7.19) , h:
(7.20)
:
(7.211)
(7.22)
(7.20) (7.22) , .
N , , .
= (` a5 `a1)/4; (7.23)
B = `a1 A. (7.24)