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hw4_sol - .3 ’ 00 n A v 1 x w 5‘ 2,1 Two gage marks are...

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Unformatted text preview: , .3 _ ’ 00 n! A '- v 1 x w 5‘: 2,1 ' Two gage marks are placed exactly 250mm aparton a 12-11131—- ' diameter aiuminum rod. Knowing that; with ari afial bad if 5000 N acting on 3 the rod, tbs distance between the gag: marks is 250,18 mm, determine the I modulus of clastipify of the aluminum uscd imth‘e rod, . . gym 1,: 2523mm, 5; [email protected]€’13W:0vl&mra :95 given FESQOOCNEJ Y5: 20mm) 3% 1 MW" ”’“M I 2.4 A 284?: lengthof 'OESdQAdiEmciq 3:651: Ig/frz’fii's‘.tejL a used in a hanger. It is noted that the wire stretches 0.45 in. 'when a tefis'ile férce P is ap- I plied. Khowing mp5,: 29 X 10‘? psi, detcm§n§._,('cz_~);.fi1¢ymagn‘ituda of the force F, (b) thebdfiésfim; :16ij 3633311315: my f ' . é . 7? fl WW : / ’ 2/, A £1 4.9mm «» M thmm’EX/ofg’ 1....” ._ 2.6 A central red made of yellow brass musi :15: stretch more than 3 mm when the tension in the-Wire is 4.kN. Kfiowing that E = 105 G921 and that the 1 maximum allowable normal stress is 180 MPa, determine (a) the smallest . diameter that can be selected for the rod, (1)) the corresponding maximum length ; Of Eh? 110% ,. . i *’ ng/€.Y\ P3441479] gmx‘liCmm) / E—Z/OS‘CQPQ) 4Tmmx: * Dega‘jm {90‘3”‘(7 OEAK '\ . v JE’DCM/fia I am”... QWMW “/03 (SN) i , r H.935m’3fl/2; “‘ (r4011 x»; Jim KM“ 3‘ . 77xmwoéf’Y/w) 77W“ (,2?) fluid-:1 2- (96x10 36m 3. W ‘dmcn : EGBQJCmm)‘ l Deg/9% LG‘YE‘ 6‘m0xx (wkéhflm- 6}“ij F" .’L '2? 5<8max9i , @fiE/é >40 5/. A @pmxa ~-——-« 30ml ’7L<3‘x;wo§x ‘9 (m :1] lo?§€m l7 2,9 A biock of 250mm; Itngth and 50 X 40—mm cross écctibn'ié id'sup— e: part a centric compressivé load P. The material to be used is a bronze for which E = 95 GP; Determine the largest 103d which can be appfied, knowing that théfiormal stress must riot» cxceed 80 MPa mdvthat the decrease in length of the‘bbék ghouldbc at mést 012% 'of its original Iengthj ' ‘_. _ a \ /' * A’IZMVL 9'va L"2S‘o mm), A: 9WD CW” 1 Wm 3 ”J Mm” 5M7" 0' 5" D (/1 r _. a D€§ij W'Y'C’ Tmagx “3 0 l (T 0} £7 J:— < g/OCMPQW 3) PS mX/Oé(&)V7K/O (WW) \3 ‘ W a mid 3 {fl ‘ V . . - . ,_ j i « ‘ - '0 "c” (C— gMLNX g : s Ufgt n V W a 3 4 (swarm/Z $9 , O") /\ 4;], L1 f‘ //\ M 3 § L9 to N ! ...
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