Question: 2 - 7 . The pin - connected rigid rods A B and B C are inclined at = 3 0 when they are unloaded.

2-7. The pin-connected rigid rods AB and BC are inclined
at =30 when they are unloaded. When the force P is
applied becomes 30.2. Determine the average normal
strain in wire AC.
Prob. 2-7
2 - 7 . The pin - connected rigid rods A B and B

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