2-9. If the resultant force acting on the support is to be 1200 lb, directed horizontally to the right, determine the force F in rope A and the corresponding angle θ.
SOLUTION
Diagram Benda Bebas (DBB)
Ans
Parallelogram Law. The parallelogram law of addition is shown in Fig. a,
Trigonometry. Applying the law of cosines by referring to Fig. b,
Trigonometry. Applying the law of cosines by referring to Fig. b,
Ans:
F = 616 lb
θ = 46.9
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