Statics and Dynamics Quiz
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A planar truss is constructed by starting with a single triangle (the basic stable unit) and then adding two new members and one new joint at a time. This process is repeated until the final truss has j=8j = 8 joints. At the last step, a joint is added at the midpoint of an existing member, splitting that member into two segments, and the new joint is then connected to one additional joint elsewhere in the truss by a new member.
Compared to the standard simple-truss construction rule, what is the effect of the final step on the truss's determinacy and stability?
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