In this article (and video above), we calculate the internal forces of trusses using the method of joints. This is a classic example that you might encounter in the static section of the FE Exam. This problem was created and solved by Mechatronical engineer, Chanté van der Spuy.
Question:
Consider the truss shown below. It is subjected to a horizontal load of 5 kN at joint D and a vertical load of 5 kN at joint C. The horizontal and vertical reaction forces at joint A are given as 2 kN and 4 kN, respectively. Determine the force in member BD.
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