CHAPTER 2 PROBLEMS AND SOLUTIONS Problems for Sections 2.2 [PDF]

A8A A barge is pulled by two tug boats. To move the barge ... Tug A. Tug B. Barge C β. FIGURE P2.11 olution (a) for β

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Idea Transcript




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IKJ¦IKL ” TR „SeUvRTfUv„CS^SVWvfz[nP-RTS^UvWv_la9U‚[nRTf[qoW#UXWvfz[qWXSnR9P]pa9_^_‡R9PEaia9fC~mjfChagmjSV‘ia9fCWgJ ŽeagijUv„iag[VWZ[qoCW}S^Wv_V„i@[…agf¸[nP-RTS^UvW#a9fC~oCW#a9fChTi@Wm@[n]`a9{9WX_nknmM[qooW}r·autKmj_XJ F1 = 2000 lb F3 = 500 lb

45° F2 = 1000 lb

30°

” w‹•#–s—s˜š™ I/JËIKL › RTij„[VmjRTf6œ ” m@SV_^[iCfC~ÍÄb¡f À Ç f Æ Æ Ä³x¡ • ±9c9c Ç I9cTc9c ‰Qª IT¬Xª ±9c9cz¬vª¹I9cTcTcz¬UXRT_6Lžbz± d ¡ I9b º c3ij’ ]`a9{¸mjfh|a9f5a9fChTi@WR9P I9cTcTcx_Vm@fLbz± d ¡ º L ¤ ± d z± d Ç _Vm@f ¢ I9b º c £ UXRT„Cfz[qWXSVUXijR/U…{¸knm@_VW}P-SVRT] rª-[VoCW#Y9WvS‹[qmjUva9iy¬­JŸ©sW‚t/5[ ifCÍ ~ Ä Æ ¡ij Ç f{ÎZknoCm@U…o m@_~Sqažknf1mjfÃ[qoCW[qRT— ‘ ihT„CS^W9J5NZ‘C‘CiM€/mjfCh5[qoCW`iažk R9P‡UXRT_Vm@fCWv_[qRÀ[VoCW iChT„CSVW €/m@Wvij~_ Æ ¡ • ª IgcTcTcz¬ Æ Ç ª I9b º cz¬ Æ ‰Iª I9b º cz¬vª¹I9cTcTcz¬UXRT_Xª IKL ¤ ± d ¬x¡ º Í º¤ I3ij’ Ä knomjU…o5]pa9{gWv_la9f5a9fCh9ijWR9P µ#¡§L º c d ‰ º L ¤ ± d ‰¯_Vmjf } ¢ ª¹I9cTcTcz¬ _Vm@ºfnÍ IKºL ¤ I¤ ± d £ Ë ¡ zb ¤»º d UXRT„Cfz[qWXSVUXijR/U…{¸knm@_VWŸP-RTSr¾J ¥ a9_^[vOƒ Ä Ì ¡ Ä Æ Ç f Æ knomjU…om@_E~Sqažknf3mjf}[qoW\’=R9[V[VRT] iChT„CSVWgJ Ns‘C‘CiM€p[qoW#ijažkÎR9P+UvRT_^mjfCWX_‡[qR|hTWX[ Æ Æ • º  º ¤ ÄΡ ª×LcTcTcT¬ Ç ª Í IT¬ ‰Iª‹LcTc9cz¬vª º Í º¤ IT¬UvR9_£Lb ¼¤ I d ¡³L Ê9¼ L}ij’ knomjU…o5]pa9{gWv_la9f5a9fCh9ijWR9P zb ¤»º d $ ‰ ÇÃÌ ¡ Tb ¤¦º d ‰¯_^mjf } ¢ LcTc9cL Ê9_^¼mjf L#Lži@b ’ ¼¤ I d £ ¡ÎI9c ¤ ± d UXRT„Cfz[qWXSVUXijR/U…{¸knm@_VW}P-SVRT][qoCWr·autKmj_vJ IT±

F4 = 2000 lb

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