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← HistoryWhich outcome results when an ancient Inca rope bridge's stone anchorage succumbs to seismic forces?
A)Catastrophic deck cable tensile failure✓
B)The deck remains negligibly displaced
C)Increased bridge oscillation amplitude
D)Enhanced structural cable torsional stability
💡 Explanation
Tensile failure results due to increased loading by ground movement and gravitational forces because the anchorage fails, and a static equilibrium cannot obtain sufficient normal force. The mechanism specifically is anchorage shear failure, therefore the deck support breaks, rather than experiencing increased oscillations without total compromise.
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