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← HistoryWhich consequence results when Inca suspension bridge cables exceed creep limits?
A)Increased tensile strength overall
B)Deck swaying becomes amplified✓
C)Improved cable weather resistance
D)Reduced anchor point stresses
💡 Explanation
Excessive long-term strain of the natural fiber causes the bridge to lengthen; this *dynamic instability* allows oscillations to build catastrophically using positive feedback, because restoring forces decline with deflection rather than increase like a stiff structure. Therefore, violent swaying is exacerbated, rather than stresses being reduced.
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