How does weight affect the rate of descent in an aircraft?

The correct answer highlights a fundamental principle of aerodynamics and the physics of flight. Heavier aircraft experience a greater gravitational force, meaning that in order to maintain level flight, additional lift is required. When an aircraft is in a descent, especially without power such as during a glide, the weight directly influences how fast it descends.

The increased weight requires more lift to counteract it; therefore, if lift is insufficient, the aircraft will descend at a faster rate. Simply put, when an aircraft is heavier, it needs to descend more rapidly to generate enough lift to maintain controlled flight. This relationship holds, particularly when considering the principles of drag and lift, which dictate how aircraft respond to changes in weight.

Overall, understanding how weight impacts descent helps pilots make informed decisions during flight operations, particularly in approaches and landings.