Private Pilot License (PPL) Aerodynamics Practice Exam

The correct selection focuses on the requirement for lift in relation to an aircraft's weight. As the weight of an aircraft increases, the amount of lift needed to maintain level flight also rises. This relationship stems from the fundamental principle that lift must counteract the weight of the aircraft in order to achieve equilibrium in flight.

To maintain level flying conditions, the aircraft must create enough lift to equal the gravitational force acting on it. When weight increases, the aircraft's wings must produce more lift to achieve this balance. This is typically accomplished by increasing airspeed, adjusting the angle of attack, or using flaps to increase lift at a given airspeed.

The other options do not accurately reflect the relationship between weight and lift. Increased weight does not reduce stall speed, simplify maneuvers, or leave lift unaffected. Instead, as weight increases, it directly correlates with the increase in lift required, leading to a greater demand on the aircraft's performance and control during flight.