Which vulnerability increased in torsion-powered Roman siege engines during prolonged rain?

💡 Explanation

During rain, moisture absorption causes fiber swelling in twisted ropes which reduced tension. This compliance change alters the stored energy because release of tension results in lower strain on the projectile. Therefore projectile range decreases as tension slackens, rather than frame failures, targeting obstructions, or gear problems which occur from other mechanisms.

• Which risk increased as 18th-century shipbuilders maximized cargo capacity in wooden hulls?
• Prior to efficient steam-powered pumps, which construction technique increased ship's hull integrity against hydrostatic pressure during deep submergence?
• Which outcome occurred when unreinforced terrace walls saturated with water, experienced freeze-thaw cycles in the Andes?
• Which environmental consequence occurred in pre-Columbian Mesoamerica when intense terrace farming of maize exceeded capacity?
• Which mechanism limited the construction height of Gothic cathedrals before introduction of iron reinforcements?
• Which mechanism limited the early Bessemer process steel production before 1860s?