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Which risk increases when Roman catapults experienced prolonged firing?

A)Rope's elastic modulus decreased drastically
B)Frame's ductility abruptly rose higher
C)Timber's compressive stress improved locally
D)Stone projectile mass spontaneously declined

💡 Explanation

Elastic ropes experienced increased fatigue because cyclical loading caused the intermolecular bonds to weaken via hysteretic heating, therefore rope elasticity degraded rapidly rather than strengthening materials via work hardening.

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