, , , , , , . . , .
, , . , .
, . - , , , - .
, . . . , - , .
, , , Δ S Δ , , , Δ S, .
, F n, , (p = F n/ S).
- (): 1 , 1 , 12.
1 = 105 , 1 (1 =760 . . ., 1 . . . =133 ).
() : , , .
, . , . . , . S , h ρ P = ρgSh,
p = P/S = ρgSh/S = ρgh, (6.1)
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. . . ρgh .
(6.1), , , , , , : , (), , ():
FA = ρgV,
ρ - , V - .
, - . , , (.6.1). , , , , , , , . , , . . . , , - .
, , . ( ), , . - . S 1 S 2, (.6.2).
Δ t S Sυ Δ t; , 1 S 1 S 1 υ 1, υ 1 - S 1. S 2 1 S 2 υ 2, υ 2 - S 2. , . (ρ = const), S 2 , S 1, . .
S 1 υ 1 = S 2 υ 2 = const. (6.2)
, . (6.2) .