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← HistoryWhich risk was notably amplified when Viking longships encountered tidal currents near temporary rope bridges?
A)Rope strand galvanic corrosion onset
B)Oscillation-induced structural resonance failures✓
C)Unpredictable longitudinal shearing of the deck
D)Unanticipated bending stress concentration initiation
💡 Explanation
Oscillation-induced structural resonance failures were more concerning around transient rope bridges because the Helmholtz resonance amplifies wave action around bridge supports. Therefore, the ships experienced unpredictable motion near bridges, rather than corrosion or shearing, because resonance magnified hydrodynamic forces beyond design limits.
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