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The cross-braces (labeled 1 and 2) in the truss are cables...
The cross-braces (labeled 1 and 2) in the truss are cables that can support only tension and not compression. They slip past each other where they cross; i.e. they are not pinned together there. (a) Please indicate which of the two cross-braces is in tension (the other will be slack, with zero force), and calculate its tension. (b) Now suppose that the cross-braces are replaced with regular rigid struts that can support both tension and compression. Would the structure now be statically deter- minate? Explain how you know. L * + F L/2 2F L 1 2