Final answer:
A lorry loaded with bags of maize packed high up is likely to topple when negotiating a corner due to it becoming top-heavy and the centrifugal force acting on the bags of maize pushing them towards the outside of the turn.
Step-by-step explanation:
When a lorry is loaded with bags of maize packed high up, it becomes top-heavy. This means that the center of mass of the lorry is raised, increasing the chances of the lorry toppling over when negotiating a corner.
When a lorry takes a corner, there is a centrifugal force acting on the bags of maize, pushing them towards the outside of the turn. As the bags are packed high up, this force creates a larger moment of force (torque) that can cause the lorry to tip over.
On the other hand, if the bags of maize were distributed lower and evenly within the lorry, the center of mass would be lower, reducing the chances of the lorry toppling over when negotiating a corner.