Question

Problem#1 (7.5 points): Determine the force in the cables AD, AC and the elongation of the spring AB (k = 1.5 KN/m) necessary
Problem#2 (7.5 points): Determine the force in the cables AD, AC, and AE necessary to support the structure shown in the figu
Problem#3 (5 points): Determine the resultant of force supported by the structure shown in the figure below. -30° F = 300 N 3
-30 F = 300 N 30° 300 mm 300 mm 300 mm 50° 200 N
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Answer #1

Solution frest of all we need to draw foece vectoe diagacam from gives figure - Z(A •D(-1,2,2) TAC TAD, 35° 100 - yo A w x (2Woo, 11 ue - weight w mg (-²) = 40X9.816 -392.4 Now, Apply equillibzium condition at À & Fall zo Is + TAD + Tact w ofs î+(-0.Fs = 0.33 TAD TO STAC : 0:33x343.770S X324:24 Fs = 275 154 N Elongation in the spring will – fos 11 275.54 1.sx 103 0,1837 m

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