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# ENES102_S08_Final_Answers - = F EF = 32 lb F spring = 13.86...

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Answer Key for Old Exam Problems – Final Exam 3D Equilibrium Problems (Non-Concurrent): 1) T BC = 700 lb A x = 600 lb A y = 200 lb M Ax = 1,200 lb-ft M Ay = 0 M Az = 4,800 lb-ft 2) kN k j i F AB ) 60 . 19 798 . 9 798 . 9 ( v v v v + = D x = 9.798 kN D y = 9.798 kN D z = 19.60 kN M Dx = 58.79 kN-m M Dy = 19.60 kN-m M Dz = 19.60 kN-m 3) T BD = 4.898 kN T BC = 4.471 kN A x = 0 A y = 2 kN A z = 8 kN 4) N k j i F A ) 600 5 . 848 600 ( v v v v + + = O x = 600 N O y = 848.5 N O z = 900 N M Ox = 98.35 N-m M Oy = 60 N-m M Oz = 54 N-m 5) F BDC = 62.02 lb F CE = 110.0 lb A x = 19.37 lb A y = 192.0 lb A z = 25.83 lb Frame & Machine Problems: 1) T = 70 lb C x = 70 lb C y = 70 lb M RC = 245 lb-ft A x = 70 lb A y = 8.75 lb F BE = 61.25 lb 2) F BC = 550 N D x = 0 D y = 400 N F C = 1,467 N A x = 0 A y = 2,017 N 3) F BD = 108.6 lb F CD = 102.2 lb F DE = 63.68 lb P = 16.98 lb MA = 5.889 4) F AE = 32 lb F DE
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Unformatted text preview: = F EF = 32 lb F spring = 13.86 lb MA = 1.733 5) F CF = − 140.2 lb A x = − 40 lb A y = 9.082 lb E x = − 40 lb E y = 9.082 lb M RE = 2640 lb-in Friction Problems: 1) P min = 622.9 lb 2) P max = 160 lb (block A slides) 3) P = 325.6 N (tips) 4) F min = 290.5 lb 5) d = 12.39 ft Centroid & Moment of Inertia Problems: 1) x C = 104.1 mm y C = 110.6 mm 2) x C = 38.04 mm y C = 156.2 mm 3) y C = 108 mm I Cx = 7.791 × 10 7 mm 4 4) x C = y C = 3 in I Cx = 136 in 4 I Cy = 40 in 4 5) y C = 95 mm I Cx = 8.354 × 10 7 mm 4 6) y C = 5.868 in I Cx = 647.0 in 4...
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