Which mechanism limited the distance Roman torsion siege engines, like the ballista, could accurately launch projectiles?

💡 Explanation

As projectiles travel further, trajectory deviation increases owing to variations in air density, wind velocity and projectile shape, which affect projectile aerodynamics. Therefore, trajectory deviation from air resistance increases rather than spring fatigue, rope degregation or deformation because these mechanisms primarily control the energy output, not external ballistic stability.

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