Which risk notably increased as suspension bridges lengthened during development?

💡 Explanation

Harmonic resonance became a greater problem; small oscillations caused positive feedback, eventually leading to collapse, because its frequency matched the bridge's natural frequency. Therefore, understanding aeroelastic flutter was important, rather than just load calculations.

• Which failure arises when ancient bronze-smiths repeatedly cold work weapon edges without annealing?
• Which navigational risk increased for 18th-century ships after imperfect celestial observations led to cumulative positioning offsets?
• Which mechanism enabled increased hull strength during 18th-century ship construction using 'diagonal bracing'?
• Which navigational error increases during celestial navigation when atmospheric refraction is uncorrected?
• Which risk increases when bronze tools used to cut limestone blocks exhibit high tin content?
• Which risk increases when long-fallow crop rotation on pre-Columbian chinampa (raised bed) agriculture lacks consistent organic replenishment?