6170. , . 33 ( I X), Ft F3. . -1 , F = 2 105 . F1 F2, At 2 . 4.
71. F (. 34, I), [σ]=150 . [F], .
72. , , (.34, II), [σ]=160 . , .
73. (. 34, III) , F=60 , [σ]=140 , [σ]=100 . , .
74. , (. 34, IV), , [ q ] . [σ]=16O , [σ] =120 .
75. (. 34, V), , , F = 60 , [σ] = 160 , [σ] = 60 , = 2 10(5) , = 1 10(5) . , .
76.- (. 34, VI), , , [σ]=160 . , .
77. F (. 34, VII), , , [σ] = 160 , [σ] = 60 , = 2 10(5) , = 1 105 . [F], .
78. (. 34, VIII) , ; [σ]= 150 .
79. (. 34, IX), [σ] = 160 . .
80. , (. 34, X), q , ; [σ]=160 , [σ]=110 . q
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81. [φ]=0,4 / , = 15 420 (-1). ,
82. P=8 240 (-1) , [τ] = 60. , l=300 .
83. (d=40 ,ά= d(0)/d=0.7) P=12 , [τ] = 40 , [φ0] = 1 /? G= 0,8 * 10(5) .
84. d d0 = 160 270 (-1), [τ] = 35 , [φ0] =0,008 /, ά= d0/d = 0,65 G =0,8*10(5) .
85. (G=0,8*10(5) , =80 300 (-1), [φ0] =0,5 /. τ = 140 ?
86. 240 -1
d =38, [τ]=0,8*10(5) , [φ0]=0,02 / G=0/8*10(5) ?
87. , = 40 420 "1 [τ] = 35 , ά = d0 / d =0,8. , . ?
88. , [φ0] = 0,008 / =100 240 , d0 / d = 0,85. . ?
89. [τ] = 40 , =120 45 ■ l = 2d, d .
90. [φ0] = 0,5 / , = 180 90 . , τ == 135 ; G = 0,8 10(5) .
91 100. , , . 35, F1,F2 , , , ( ), [σ] = 160 . 5.
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101. (. 36, I) h = 3 = 20 F = 100 . f .
102. δ = 2 (. 35, ). b, , F:f = 16 /. = 2*10(5) .
103. (. 36, III),
1/800 .
104. (. 36, IV) F. [ f ] = l /600. , , .
105. b δ (. 36, V) , 2 . b , [σ] = 160 .
106. (. 36, VI), [ f ] == 10 , = 2*10(5) . . .
107. (. 36, VII) F, [ f ] = l /700. .
108. (. 36, VIII), . [ f ] = l /800; d0 = 0,8 d.
109. (. 36, IX) , [ f ]= l /600.
110. (. 36, X) F. , 12 .
111120. (. 37), , ω, / ( . 6): ) ; ) ; ) ; ) d , [σ] = 60 ( 111, 113, 115, 117, 119) [σ]=70 ( 112, 114, 116, 118, 120) Fr1 = 0,4F1, Fr2 = 0,4F2. 111115 , 116120 .
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