44
1. .
1.1. . -5 . 40 V = 7,2 3. .
1.2. -5 . t>1180. t = 200 r = 888 ∙-3. (. ) [3] t = 370.
2. .
-5 . F = 1080 2.
3. .. 7.2 7.3 [1] .
4. Fq, (.27) [1]:
d = = 37,1 ,
= 42∙d∙()0,61 = 42∙37,1∙()0,61 = 33,4 ,
= 0,04 ∙-2∙-1 (. .1 [1]),
∙-3,
h =
S =
B =
A =
= 0,3185∙ =
0,2893,
= =
= 0,3185∙ = 0,1797,
Fq =
5. t (.34) [1]:
= =0,9920.
6. q (.24) [1]:
q = Ef∙Fq∙t = 13∙0,3406∙0,9920 = 4,39 ∙-2,
Ef = 13 ∙-2 (. .1 [1] ).
7. 4 ∙-2 30 , , .7.3 . 2 [1] .
45
1. .
1.1. . , . V = 1,0 3. - V = 1,2 3. F = 20 2.
1.2. . t>1350. r = 880 ∙-3. (. --) [3] t = 400.
2. .
- - F = 20 2.
3. .. 7.2 7.3 [1] .
4. Fq, (.27) [1]:
d = = 5,05 ,
= 42∙5,05∙()0,61 = 8,4 ,
= 0,04 ∙-2∙-1 (. .1 [1]),
∙-3,
h =
S =
|
|
B =
A =
=
= 0,3185∙ =
0,0152,
=
= 0,3185∙ = 0,002325,
Fq =
5. t (.34) [1]:
=0,9810.
6. q (.24) [1]:,
q = Ef∙Fq∙t = 25∙0,054∙0,9810 = 0,38 ∙-2,
Ef = 25 ∙-2 (. .1 [1] ).
7. c 4 ∙-2 30 , , .7.3 . 2 [1] , , .