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The truss is made from A992 steel bars, each of which has a circular cross section with a diameter of 2.1 in

The truss is made from A992 steel bars, each of which has a circular cross section with a diameter of 2.1 in (Figure 1) 

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Part A 

Determine the maximum force P that can be applied without causing any of the members to buckle. The members are pin connected at their ends. 

Express your answer to three significant figures and include the appropriate units.

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