HW10soln

HW10soln - U6 Sept. 26, 2007' HW # 10 ‘ Key ‘...

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Unformatted text preview: U6 Sept. 26, 2007' HW # 10 ‘ Key ‘ Table-Group ‘ 2.84 The magnitudes of the two force vectors are |FA| I 140 lb and |F3\ : 100 1b. Determine the magnitude of the sum of the forces FA + F3. 2.85 Determine the direction cosines of the vectors FA and F3. 5 :lemw aw; FM: 14045440 Col/60 x XZ 2.92 Cable AB exerts a 200-lb force FAB at point A that is directed along the line from A to B. The cable AC exerts a 100-lb force FAG at point A that is directed along the line from A to C. Determine the magnitude of the total force exerted at point/l by the two cables. ; F . if: V“ .. fl. A mo, m; it 4.61 The force F exerted on the grip of the exercise machine points in the direction of the unit vector 8 ~ and its magnitude is 120 N. Determine the magnitude of the moment of F about the origin 0. "'-_ _ Zia 2, , F~{ZON(gi~§j ji‘ _ §f§i3 mlil _ _ A H N by (.15 f emf-aw L» m 1 F 9 M0 0-7F fl 1 ' A L A .25 .10 <15 1434 (n+1; are .thP [99, JJ 3 .3 3 4.69 The tower is 70 m tall. The tensions in cables AB, AC, and AD are 4 kN, 2 RN, and 2 kN, respectively. Determine the sum of the moments about the origin 0 due to the forces exerted by the cables at point A. A5 124% Learnt/$4.3 QKe-r¢<'$2 come M Amway W/wa WCMY’f-ewj' 1% is f: Wail} Cm ww—x mamamé teem.) MW WEI/Le 3 mi: (ll—90:.“ H30“ 52.1.2: mama-:th care—tau JM, : r11; “We, tot—t6}. # A aC22l¢N h/k—‘ac. 'A QWW ...
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HW10soln - U6 Sept. 26, 2007' HW # 10 ‘ Key ‘...

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