Which risk increases the most when tightly-woven planks of a rope suspension bridge experience differential sagging?

💡 Explanation

Differential sagging results in uneven load distribution, causing high shear stress because planks nearest the lower point must transfer more load acting as a shear plane; therefore, shear fracture risk increases, rather than tension/stretch of the ropes or temperature effects.

• Which outcome predictably occurs when exceeding the Plimsoll Line on 19th-century merchant ships?
• Which outcome arises when complex algebraic fractions are omitted in early blast furnace calculations?
• Which outcome resulted from attempting to fabricate astrolabes from brittle speculum metal?
• Which outcome arises when hydrostatic pressure exceeds a qanat's material yield strength?
• Which mechanism caused the 'tin pest' phenomenon that weakened some historical bronze artifacts?
• Which outcome occurs when a fully-laden Viking longship encounters unexpectedly shallow coastal waters?