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Unformatted text preview: U6 Sept. 26, 2007' HW # 10 ‘ Key ‘ TableGroup ‘ 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 200lb force FAB at point A that is directed along the line from A to B. The cable AC exerts a 100lb 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 .
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.. 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,
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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 QKer¢<'$2 come M Amway W/wa WCMY’fewj' 1%
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 Fall '08
 Biggers
 Statics

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