Which primary mechanism allowed ancient suspension bridges, such as the Inca rope bridges, to span significant distances?

💡 Explanation

When load is applied to the bridge deck, the catenary shape of the cables distributes the weight through tension, resisting sag due to gravity because tension forces act along the cable's length. Therefore, catenary cable weight distribution results, rather than arch compression, cantilever bending, or torsion, which rely on different loading and structural properties.

• Which inherent risk increased during 18th-century wooden ship construction due to rapid deforestation supplying shipyards?
• Which outcome results when exceeding design limits of a Roman arch bridge built with pozzolanic concrete?
• Which navigational risk increased due to thermal expansion within 18th-century ship chronometers during extended tropical voyages?
• Which consequence results from incorrectly tempering a gladius during Roman siege warfare weapon manufacture?
• Which mechanism critically undermined late Roman fortifications during prolonged sieges with trebuchets?
• Which risk dramatically increased as the Roman road network extended into mountainous regions?