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Draw the Free-Body Diagram:
A 3 m long boom (Figure) is held by a ball and socket joint at A and by two cables CD and BE. It carries load of 20 kN at B. Draw the Free-Body Diagram for the boom AB.
Solution
Free-Body Diagram for the boom AB in Figure (b) shows the following:
1. boom AB,
2. constraining forces Ax, Ay and Az because of ball and socket support at A,
3. tension TCD in cable CD, and
4. tension TBE in cable BE.
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