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← HistoryWhich outcome commonly occurred when medieval rope bridges exceeded maximum occupancy?
A)Catastrophic tensile failure occurs
B)Bridge deck oscillations amplified✓
C)Anchorage slippage becomes prevalent
D)Severe material creep accelerates
💡 Explanation
Bridge deck oscillations amplified happened because crowds provided rhythmic excitation near the structure's resonance frequency, initiating dynamic amplification of oscillations; therefore, the deck oscillated increasingly with each step, rather than immediate tensile failure, because ropes maintain relatively linear elasticity within moderate loading.
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