Question

Chapter 4, Problem 4/007 Determine the force in each member of the loaded truss. The forces are positive if in tension, negative if in compression. 2.6 2.0 4.3 2.9' 3870 lb 3460 lb Answers AB lb lb BC lb BD lb BE lb CD lb lb

Answer 1

Solu ton Rem 2.ς 2.9 RD 4.3 9% 3870 im eaions cv : 3 460 + 3870 New "ata kirg moment about c Ro1 39.23 b New frem euatren O ReM-164 392 rectfon Gmslysd directin 수 Rcv PcH 2.6

Nw taka node A 34-59 AE 387o Lb 2. θ : 34, 59 rre sin MA 387o lb Now 0 fng sine- 387o G681E. 9799 b 3873d7 sin 34 59 F sin θ rna ะ, 6817 1b fAE 6816-g739 (o. 34.59 5373 AG in OE 34e

Tensiovm Cnside rin, the node D 8D 二, 2 4-94 FeD.Sinx feDWK + 16439.23 = 5611.87g( By F F5035 03 1b Tensim

Noto (on side ring Nodl c' Re v C. 니 4.3 = 0-1395 Noww B 。way Resolvi"Y fte (orte fecin horizont-cl4veWol RCH Tens on