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← HistoryWhich risk increases when an ancient rope bridge's tension reaches material yield strength?
A)Catenary arch compression failure lowers
B)Harmonic resonance amplification occurs suddenly
C)Progressive material creep accelerates substantially instantly✓
D)Electrostatic discharge ignites nearby tinder
💡 Explanation
Progressive material creep drastically increases in the rope fibers because the applied stress surpasses the material's acceptable elastic deformation limit leading to failure. The accelerated creep weakens the structure, therefore, catastrophic failure becomes extremely probable rather than gradual sagging.
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