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257_Mechanics Homework Mechanics of Materials Solution

# 257_Mechanics Homework Mechanics of Materials Solution -...

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Unformatted text preview: Ff] (b) PROBLEM 3.123 3.123 Using rm = 10 ksi, determine for each of the aluminum bars shown the largest torque T which may be applied and the corresponding angle of twist. Use G = 3.9 X 106 psi. SOLUTION ’L/au = [0 ksn', G=3.‘t¥/o‘Ps: =- 8.9 was ksi (Go) 0L=LZ In) 570.6554) a’ﬂ :' 8 Y‘ae me Tahiti 3. I c, : 0.267J ca: 0.263 T _ __ TIM” 2' m -- i = C'QBa-fnmg T:(O.&é7)(l.8)(o.é)t(103= L730 lapdn .1 .. TL _ (1.7%o)(3e) _ K a -3 at CP‘ claim; '(0.263)(1.8)(o,¢)3(3;%103J “ ”“4"” “4 '=‘ 8.95" «d (2,: 1.0;...J L: L0 in. f: Loo c.= 0.203 , cl: 0.190; T: Clo-£221": 1‘ (0.208)(LO)61,0')"(10) = 2.08 Mp4” .‘ _ TL _ (2-03)(36) _ _3 GP ‘ C20 539 H (0—1406 )U-OZI.O)3(3ﬁx[o:‘-j ‘ [56-6 ”’0 ”‘4 = 7-82“ ‘I ...
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