During a protracted siege, which outcome becomes very likely when miners undermine a castle wall using shoring beam removal?

💡 Explanation

Undermining a castle wall weakens its base supports because stress concentration exceeds the material strength, causing sudden catastrophic failure via brittle fracture. Therefore, the wall collapses abruptly inwards rather than settling gradually, because shoring removal triggers immediate instability.

• Which limitation constrained the early practical adoption of John Harrison's marine chronometer design during mid-18th century navigation?
• Which consequence results from exceeding the yield strength of ropes on a longship at max sail?
• Which navigational challenge increased as Viking longships travelled further from coastal waters?
• Which mechanism MOST directly allowed early steelmakers to achieve higher carbon content in steel production?
• Which instability increases when a Viking longship's length increases?
• Which consequence results if a period 1750-1820 ship's chronometer experiences sustained pendulum-effect motions?