exam_2_sol_ns

exam_2_sol_ns - 036 245-9 ewes raw; 2 6‘0LNS ‘Zco‘? %...

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Unformatted text preview: 036 245-9 ewes raw; 2 6‘0LNS ‘Zco‘? % Problem # 1 2500 113 For the bent ha: shOWn in the figure: a) Replace the existing forces end cou 1e by a single equivalent force/coupie system at point A. b) Draw the equivalence diagram of this F / C. _ 2’ - I 800113 \7/ f 0) Replace the F/C'at A with the Resultant force . l , and determine Where it intersects a horizontal line that passes through line AB. ' d) Draw the equivalence diagram of this further reduced system. at) "Keg? = *Zszemlzce 57-3709 (g ,1 ... 7 MA‘ mi '1‘,:i:=4F E) M) -I (129 WWWT 4' Feta: W «'Iéaowlamoau—jzfepoo :5 “72¢? 005, M; H The 100-113 plate ABCD is Supported by Q. hinges along edge AB and by wire CE. ‘ Knowing the plate is uniform and assuming ‘ the hinge at A cannot exert axial thrust: ; a) Draw the FED. (Assume hinge A is at the origin and hinge B is at the corner of the plate. See the given coordinates.) b) Determine the reactions of the supports and the tension in the wire CE. (Set up all ' required equations, but you do not have to solve for them.) Given: A (0, 0, 0,) ft D (0, 0, 4) B (6: '27 E (33 49 C (6, —2, 4) G(3,—1,Z) r» W iWww—t' fit” Ava-Hth in hygiejgeggg it, we w ga'f’ - . v. - TAG}? TWQ: ,mggsTg—Ofléfijé—ngla’g it, 2:»!ng LL, - _, .. 56313;}; it "2 Ga 24152) éfifirftcé «WM/12, emf, jaw/.2009 7 23% QBILfléSEc’FbRQE #633;ch Exz- 0.35% =59 ‘ :0 A3 +3511 [80 T; 0 {,0 A6? +13%;- egt’q 2: O k @ c: - “— "“-"' zmamfc? ZMX 0 2A; «5‘0721 +Zw 90 @EMVO 6,15% «169%7 50 “éfij‘i‘m go , CE 2450 STATICS EXAM 2 ‘ FALL 2009 NAME: Gill 6 SCAN SHEET QUESTIONS: QUICK ANSWER: 1-11 (2 points each unless stated otherwise) ' 1. (3pts) All the structures shown in the following figures are supported by pins, rollers, and or links and are all statically determinate except: 6 ' _ _ _ 3) Completely constrained For the speelfied figures shown in problem #1 determine 1]} Partially constrained their constraint condition using these answers: 0) Over constrained (mdundam 2. Fig. 3) is: it) support) 3. Fig b) is: a d) Improperly constrained and in translational instability e) Improperly constrained and in 5. Fig. e) is: 0L rotational instability For the following questions, #6—8, refer to the following illustrations: 6. The reaction(s) for the frictionless pin-in-slot or collar in Fig. A are: t c a) normal to the surface with one moment. Figure A- b) in line with the cable, link, or member with no moment. -)- c) normal to the guide or collar, with no moment (1) two reaction components with no moment. e) none of the above Frictinnless pin in slot 7. The reaction(s) for the cable in tension or link in Fig. B are: L) Figure B a) normal to the surface with no moment. u—p b) in l'me with the cable, link, or member with no moment. c) normal to the guide or collar, with no moment. d) two reaction components with one moment. e) none of the above Figure C 8. The reaction(s) for the built-in, fixed support in Fig. (3 are: A. a) normal to the surface with no moment b) in line with the cable, link, or member with no moment. c) normal to the guide or collar= with no moment. Fixefil WWW" --r (1)th reaction components with one moment. e) none of the above QUESTIONS #941 ON NEXT PAGE ‘ CE 2450 STATICS EXAM 2 FALL 2009 For the following figures, assume all connections are pins when answering questions 9 and 10: 9. Which member is a two—force member in Frame 1‘? C. a) AC Frame 1 b) ACD '4 c) BE 6) CF e) None of the above ' 10. Which member is a twoaforee member in Frame 2? d a) AEB b) EB c) ED «a: d) DC 6) None of the above 1'1. (4 pts) What is the reaction force at support E of the bridge shown which weighs ZOO—kN? a 'a) 225-kN up b) 275-kN down c) 350—kN up (1) 375-kN up a e) 475—kN up 51 _ 5?: ...
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