The horizontal boom OC, which is supported by a ball-and-socket joint and two cables, carries the vertical force P = 8 kN. Neglect the weight of the boom. 1. Which of the following most nearly gives the tension in cable AD in kN?  a. 12.77 b. 15.66 c. 18.61 d. 9.150 2. Which of the following most nearly gives the tension in cable CE in kN?  a. 4.512 b. 7.01 c. 8.91 d. 3.51 3. Which of the following most nearly gives the reaction at point O in kN.?  a. 6.32 b. 5.81 c. 14.71 d. 13.96

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Graphical Methods

The graphical method is a method of solving equations involving more than one variable using the Cartesian coordinate system. In civil engineering, the use of the graphical method is limited to the problems involving two variables. The graphical method has a great impact in solving the questions regarding engineering mechanics.