What is the relationship between lift and weight in flight?

In the context of flight, lift and weight are fundamental concepts that play a critical role in the aircraft's ability to operate. Lift is the upward force generated by the wings as air flows over them, enabling the aircraft to ascend and maintain altitude. Weight, on the other hand, is the downward force caused by gravity acting on the aircraft's mass.

The correct answer illustrates that lift and weight are opposing forces, which is essential for flight dynamics. For an aircraft to take off, lift must exceed weight; for it to maintain cruising altitude, lift must equal weight; and for the aircraft to descend, weight must exceed lift. Recognizing this balance between lift and weight is crucial for understanding how flight operates, as it directly influences the maneuverability and stability of the aircraft throughout different phases of flight.