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The truss is suspended by two pin joints. Each segment is 3 m wide and 4 m high. The applied force is F = 9 N. What is the force in member 1? Include the sign for tension (positive) or compression (negative). Hint! In some situations it will be best to use the method of sections and in others it will be better to use the method of joints.


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14. [1pt]
The force F = 9 N is now applied as shown below. What is the force in member 1? Include the sign for tension or compression.


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Answer #1

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20 Fam-9 N FFCD+FO 12 N *F -45 -- 4 (Twin F. + F, 656 + Fio EF - FSINO- - F, 4. 9 * FAN 1, -11-25 (Tension)

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