2. In order to pull out the nail at B, the force F exerted on the handle of the hammer must produce a clockwise moment of 550 lb-in about point A. Determine the required magnitude of force F. FIGURE FOR PROBLEM 1 & 2 30 5 in. 18 in. B

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Connections

In steel structures, connections are the members that join two or more steel members. The connections are the most important members of any steel structure, and hence, they are designed more carefully. The majority of the construction cost of steel structures is incurred due to the connections. The design of connections is done as per the recommendations and specifications of the American Institute of Steel Construction (AISC).