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← HistoryWhich consequence results when differential thermal expansion in a medieval rope bridge deck compromises the rope integrity?
A)Increased deck vertical oscillation amplitude✓
B)Enhanced bridge lateral sway stability
C)Improved torsional load distribution efficiency
D)Reduced aerodynamic lift force occurrence
💡 Explanation
Increased deck vertical oscillation amplitude occurs because *cyclic fatigue* from thermal stress weakens rope fibers faster than static tension would; therefore, oscillation increases are the immediate concern, rather than better load handling or stability that assumes intact ropes.
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