. .
2 :
. ( ).
, .
.
, . . , . .
( 29.04)
S. = qmax + f+4-η ≤ [S]
b =(α∙r/ R)tq τ
τ = 700
b = 12-15
, .
. (Smin).
.
Smin . , , . . , σmin /2 ≈3,5 .
. ()
S. = qmax + f f
f= (α +2)2/ 8R
f =(α -2)2/ 8R
= (αr/2R) tq τ
Smin = qmin + f f + 4 + σmin /2 ( )
∑η = η1 + η2
Smin = qmin + f ∑η + 4 + σmin /2
∑η ≤ f
1:20 1:7 , , .()
= 1440 3
q = T + 2 h +2 μ
:
qmax =1443 +2∙33 +2∙0 = 1509
qmin = 1437 +2∙25 =1487
33. . . : , .
. 4 . 2- , . , .
, 4 , .
|
|
:
- , .
- .
: . . . , . . - , .
. , , 4-5 , .
34. .
1) 350.
160.
2) (hmax=150)
3)
4)
5)
, .
R≥350 S=1520-4+8
R=349 ÷ 300 S=1530-4+8
R≤299 S=1535-4+8
2 :
1) , .
( .)
2) , .
G = m∙g
J = mV2 / R
h/S = J/ G
h = J∙S/ G = mV2S / R mg = S/g ∙V2 / R
V2 / .
R .
h =12, 5 V2 / R
J-
G- .
g
R .
m .
:
1) .
2) .
3) , .
V =
Vi - i- .
Qi i-
Ni - .