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Current#1 sols - 3;; lu'lx'on MEEN 221 —Spring 2008 Exam...

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Unformatted text preview: 3;; lu'lx'on MEEN 221 —Spring 2008 Exam 1 February 28, 2008 Dr. McVay Section: Name: Student Number: By my signature below I pledge I have neither given nor received aid in completing this examination: Signature: "Aggies do not lie, cheat, or steal, nor do they tolerate those who do. " — Aggie Code of Honor This exam consists of Five (5) problems that are egually weighted Some problems have mparts. Be sure to carefully read and properly analyze each question that is asked. Do not jump to unfounded conclusions. but also do not overlook or oversimplify problems either. Show all governing principles, Free Body Diagrams. calculations and other work. Organize your solution procedure as clearly and systematically as possible. Answers must be justified. 5. Work problems in the space provided on the exam sheets. If you need extra space please use the back of the page and indicate continuation of the problem. Work efficiently. neatly, and use m. Clearly indicate final answers by enclosing in a "box" or place answer in box if box is provided. Include any and all appropriate units. Answers should have 3 significant figures. ' No electronic device of any kind, except a hand calculator, is allowed. Do not write your name on any other page of the exam. ‘ P WNT‘ 7‘!” 509° TOTAL: 0‘ Cw Aim v. 15.0 Au. 6 . LI K\ K14 Z O~§W “42 TiW/JCL . rvl D N W? rmJ \ 0.14MT Z UHMMT H pl 00; H QC“? \mn DH OONIQTMFW 03900 .V 0a 1% mm.¢\®ka 01L\ 0 \ aw \ .0ng 9% “me? A“ 93?-Qrfi8n ®<U4H ~ \ o “ EN «J .U$u_>o.a xon E 2$>>$cm $o$_n $luofl 500:5 $3 2 $855 __$ 95591 G 998 $5 ucm $58 $5 :_ :o_$:$5 $5 .< >58 $5 co .< 2 83:6 $5 “.0 558$. $5 55“. .2 can m_ m am $28 858$. .950: $5 = .Bo_$n $59“. E 5505 mm 35:05.0; $5 G 995 cm $$x$E “$5 $58 $_n_x$= @5828 m 3 $856 $306593 co E:_.5___:c$ E E$c $._$ _>_$>_5o$u$$._ .2 gm 52$ 2 8w m:__._m_$>> m ucm < $58 02:. 35cm :8 m n .5395 Problem #2 (20 points) Consider the following shape i L ..... "fie ....... "u dY = 58in. v x2=4y 3 F217 ¥ . I : 11D. Fl: _ . — — — — — — — — — _—:—_—_§ x a) Determine the area of the shaded area. A= (CM: 5X57 £72" at f2}:on m‘ l : 3(prq/3 or b) Determine the x coordinate, xc of the centroid of the shaded area. My“ XC A: lel Cm‘ .7 2 2-747 ” W41) ' 3- “IV /l f“ ’a\ 2 I 7 _. yzyom :w n- m XC (34.5073 ~ 80 (1:22.303 in] c) Determine the y coordinate, yc of the centroid of the shaded area. 1» , K "\ _._ 2/" Mi“ YCA '7 J 7215; \ V (u é? ‘> ,3“ ‘/ ‘7’ 5 q — . _ "2L 2" __ — s. (a d) Determine the y coordinate, yc of the centroid of the above shaded area. ..??<%. Arm _ lg” jig: 34cm 5 535 ,q3 (a "/1 4r - U “ fiTCF2=—\:37\ 51‘ 31’: 3.3769 Lgfilfl NW " _ 80,14 ‘9‘] A= 33.“? 2 /:.AL' ) L/ a... a «(T r... :r\ W Ugh . me; O: "NS— 6 t||\., mm .. "Sousa; > Am 5 lfll u 2%: 2 T03; - f On $031 06. . . U Ofizknwéubiw J C., 91970:... (COW) TL M5 0:”! O my O f O 01 p,>l_ 0,7,1 m \ i A; J . +3030 3<4 9 02+??? moo, \ < k [ J \ non +o®i inMNCnTw «fixb c + O. o x D. 0?; 0m 03 \ p \0 T \nT - LC tags << N M, w 8255 xon E 295mg 083 a m. Em. .o Em: 9 EB Emon $5 8me £5 .90: m_xm N Sonm EmEoE 05 6.: min N 9: Sonm 999 B 3:989 05 m_ Hmc>> A0 .flxm x $5 Scam 35:9 05 E:_5___:Um E mEme. Emon 9: 35 cm So mam; Eu: 9: 53E 30:09:. > Ev :8 26: Am .2328 En: ucm Ewen 9:3 9: 9553 m_ 85. 9:3 9: ho can 26: 3 quEthmo .E m+ .t T .t 9: Eon um 8282 m_ $5 550% 5:58 05 :_ ucm =3 9: ho 0.3mmth ho .cho 05 E flow 09.2 DE; 0:... . x n_ o_‘ + _ n_ ov - _ n_ on u ._. m_ =3 05 co 958 8.2 vats 9: “m5 995 cm scam um :3 9: £20: .9: o: u 3 m_ 5995 Mon? 5:3 9E5 < Ean ed 9* p530...“ Problem #4 (20 points) A transmission tower is held by three guy wires anchored by bolts at B, C and D. If the tension in the wire AD is 1260 N, determine the tension in the wires AB and AD as well as the force in the tower AO. MusUrfmmb are: 40 m; a: (fair; AC; (*1)? 4'3— Cart r: A z 1 } Y ‘ \ TAD x A TAB FAD iii -—- (5 Y? :4. » .39; A El 4 1% = TAe T» U ABM/m A +114 zMy: >3: m A ’ A a! _ an _‘_1_ ,It —20 :Ag- TM ( QAC L+—i'—A‘C‘( IQALBA +TAC'( AC>ié P ': 448 h :5 40 ‘ A :12. +lZQ€i£AB>J+llcaO flA— K. 5; FAQ is x 2A5=Jf5w§41+102 I LIL“ =74 __,‘.._,_,.r__r_,,,,_t.-.._—‘ r/‘fi __ ,2 y 1Ag= J3.(92+111+201 = V’SSY’HCO “2"‘(0 - z: ———————————— fl—w: ;‘ 225.1. gfifio; £7 A515 ,fio EAD' was -H-{’-+2o Jussm 5 3o ‘ . " 44.? 1 3. Tie, (—531- TAc(2's‘.cD* ‘2QO<2.?1>=Q "me = flaw—Tad 35.63%) job/2'. —. 3x08 —T (ouo‘D ill-9:0: am '503 i TAb AC ~ 12:. = .L _ ‘ 716(151- +7731 7—3.QD+ O , TAB iii—3+ A; “2525;793:100 1F, _ I H “1°C (11L: \25Cp N a’O' 3’52“ -.<K‘I'7 20 Q < *' ’JL 7;“ = 1303 N e 20 _ = ‘ TM 1. >—T»\c 2;;t7“2‘°0 (E53 4" FA" “3 "‘ .. lorjO N {3’ FAQ ‘-’- H153 N T “JOHN 2:. WWW H WT.\..nflMAHVI‘?OJN\r£fl + mT~O§QflIOOd l QV m _ l W L w 7.3 CrWu 07: W33 9 a i 0L 6 am + M? 08003 1»: n0 9 OOON . man a. 8255 xon E 29528 moma 902 .0 ucm .m _< E $22 cozomm. 9: ho 5:095 ucm 25:..me m5 mEEEEu .um>_o>c_ . $22 550 m5 3 859:8 =mEm bm> m_ x85 9: ho £995 9: $5 9:853. .5596 mm 85% m_ ma ooom ho 8.2.1 .0 ucm .m .< $53 E 926. $2532: 3 umtoaazm m_ x005 umamcm ._ P. 2.13an 03 ms" E0395 ...
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This note was uploaded on 10/12/2010 for the course MEEN 221 taught by Professor Mcvay during the Fall '08 term at Texas A&M.

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Current#1 sols - 3;; lu'lx'on MEEN 221 —Spring 2008 Exam...

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