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Exam1 - 1 A rectangular plate is supported by three cables...

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Unformatted text preview: 1. A rectangular plate is supported by three cables AB. AC, and AD as shown. It is known that the tension in cable AC is 15 lb. (a) Complete a FBD for the particle of interest, "A". (b) Obtain the governing equations for the three unknown forces. (c) Determine with some detail the weight of the plate. W. W A(O.4S’.0) 3(~32,o .30 (J45; o, 36) INA—,0 ,—3U ' A 5 _ '65-: w; Dimensions in inches [-98 D A A as? A I“: - “- ‘ - d 1- ”q" -- a. ,. ._ (Ln) l3~ “as: TB 32; (9:9. __ 4.4706 is; -o.7o§‘f MIN-“Wt "\ 7‘ ' 3g? 4 4 ‘\ fr. 2”}: “[5" 4-54. ‘4?‘* ,- qfli—ELBI: 1-7.2k C (1 c ‘ '75 "" A -°- 4535}: 4 ,..’.‘ "3&Tl .13: 13qu To % ..— 0.39493; _ 0.73519: «7.5:» i, F0! S‘Lfl+:f e uilib‘ifum _' W’f—lfii T?C+.Tfib:o n) 4 _ ‘ _ . _ . E. : o -oA'lcéTB +~'f.o i- 0‘3E46b :- 0 :7 0.4703 ”3-033“ ‘3 g [M ”—6) A _ ‘ W I I W: .oJfiK‘q 1—5 .—‘?.6 a 0,1393'E 2-0 3:) ... 9.70311 TE, ”0339!.” ‘1) Hill Tits {3) ‘ .- {‘3 + q T S! -— _ .._. ,_ _ x5 k : a 0'52 q [3 1. .2 ‘°\ ’38 ID :0 “-7 "' 0.3 26:4- [3 I 0.11 39 IF ‘ 71?. .1 fit) Uiszqw E5<D Toa¢705*%® => c.0570 Tb: sugar; =9 Tb:/'43,033 ? -® EEG)? E&® : «3.4706 TV the 1- o‘SNLGT‘D : €4.5‘g? =7 TB: 13¢. OHS“ 49 33' Egg anti %[email protected] 5' :a w r 9.1: r0.10$*1“TBrn.mr T}, = '2!!.7-4é£ " w=21L2 UL) n 1 . 2. (33%) A 6-ft—long pole AB is fixed at point A. A force of 8 lb is exerted on the line BC. Determine the moment about A of the force exerted by the line at B. Gavan: d“ =6 H: 1-5.;ng FWD: MM+ 039mg— AGE Iatcwg «we [m X Me. = r x T’ 2 H N £3qu . NBC. .— - _, 0 Ian: " 175:, are; “>ch (E 5 .. \ e, , ..~ - 1o * \ °. 1: arm a (BL Wm M W M ' ”:5 955‘ :2. 05'}; - owl-3 - 0'53““? N N T “ ' L 5 15¢ if A: If I [in = L433“: ~£LR$§ “geek? {Ly-fl. 3. (33%) The truss strucmre shown below is subjected to the forces and moment listed below. It has a pin support on the right and a roller support on the lefi. What at the resultant reaction forces ( BA and RB ), inciudin g direction? 500 3b.: boom, 1 M; 900 .QbS‘P'f' “/5 as shown fl" _ ; Forces: too)g,0015‘00 .86: as Ifi— 4M~—>€—-G {if—a} shown 10012135. (9 .‘venr swam, Forces Momf at; siren/n. / 74;; Fad: Reach‘on Forces £41923 Salt-("Won 1 F3 D 0 For %Ml‘ll.bfl‘g(ufl'x Ear-O £S=O EM9=O Zfic=o=> (00464.5; +500fl‘5‘\”3oiiFEBK'=-O 225:0 _-;,. —$OO&@301-600WJ +§§r+§fi0 iMy-‘O? 800 £204?! Edi—£0595 )c 300% good) +(7%j KSDO-Q‘Siflaon’é)+(-Cpg:x_6mfii) + (”rail x!ao&£)+(—zofi;xgflj) =0 (900—4024 + 4330 —l 750 +3 600 —7oo) $219+ 5 :0 BA =€o2-8 mad 25-, :0? Bar = 1,25 +433 +600 jar = 405%; R3 = gssflefi‘fl?‘ ...
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