Which problem arose in Roman road construction when exceeding grade limits on inclines?

💡 Explanation

Increased grades exceeded tractive effort limits causing wheel slippage through decreased static friction because friction depends on the normal force. Therefore animal haulage was less efficient, rather than increased landslides which require substantial moisture and erosion.

• Which mechanism caused timber-framed fortifications like motte-and-baileys to degrade relatively quickly?
• When correcting observations for refraction using an astrolabe around 1000 AD, which consequence results from assuming a uniform atmosphere?
• Which inaccuracy most limits celestial navigation accuracy during long 18th-century sea voyages?
• Which innovation resulted when mathematicians used algebra to refine Ptolemy's geocentric model?
• Which navigational outcome arises when humid air affects a brass-framed sextant's scale?
• Which adjustment to an astrolabe increases observational accuracy under high humidity?