Beer, Johnston, Eisenberg Vector Mechanics for Engineers – Statics 8 ed Ch2.C1

Vector Mechanics for Engineers: Statics w/CD-ROM

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Unformatted text preview: “Omewode _ ‘Fkymots’ PROBLEM 2.C1 Using computational software, determine the magnitude and direction of the resultant of n coplanar forces applied at pointA. Wm. WP Qe cud?- fiat/«Same?» ikm‘k‘ may}: C30 “1% my @«wfiram await! R @3713 ‘i‘ecuq "‘E’ Rx lnpu'i' ‘3, 1H: Forces) *anoGlea POr‘ s|>©L"'&“ F, ) F; .... F5 ? KDo wmpuier‘ at“... ééfivfifla$ er mamas: Mos-K» on; vaccimw; ) So *1", gamer—L 4-0 rodeoms, 'i’é (LG w“; r‘L‘ EDKLl< __ 12st) 92 _GR & W /_.__, ¥\ow«€vaor”Ka ~Fau?:, Zyfiéf4 Q.CL\ Q0r\¥ n=3 theta = [22.6 118.1 349.6] 711‘; ‘fi ”5"“ thetal = theta +“:‘&“%‘“ Qfifi"fl force = [390 680 610] A yrobtem 22—3 = *0 ‘ theta theta* pi/l80 Convcfio’f‘knfi QA¢ 1.39] sumx = O sumy = O o for i=lzn sumx = sumx + force(i)*cos(theta(i)) sumy = sumy + force(i 1)*sin(theta(i)) R = sqrt(sumxA2+sumyA2) thetar = atan(sumy/sumx) thetar = thetar*180/pi canvevr'k‘a‘xfl if thetar<0 “fig“ thetar = thetar + 360; end $ee. Wing“ 16.53:“; Cw W‘fiw‘r M MATLME @Mmamé w 9/10/07 11:46 AM MATLAB Command Window theta = 22.6000 118.1000 349.6000 thetal = 22.6000 118.1000 349.6000 force 390 680 610 theta 1| 0.3944 2.0612 6.1017 sumx = sumy = sumx = 360.0520 sumy = 149.8752 sumx = 9/10/07 11:46 AM MATLAB Command Window 2 of 2 —_____—__—_—_——_——-———————————————-————-—— __—___________..—._______————————-——-——-_————— 39.7639 sumy = 749.7214 sumx = 639.7425 sumy = 639.6048 904.6351 thetar = 0.7853 thetar = 44.9938 >> ...
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