Final Answer:
For a helicopter to hover, the lift produced by the rotor system must equal the weight of the helicopter, and the thrust must counteract any opposing forces like drag.
Step-by-step explanation:
Hovering is a delicate balance for a helicopter, requiring precise control of lift and thrust. The lift generated by the rotating blades must counteract the weight of the helicopter, preventing it from ascending or descending. Simultaneously, the thrust produced by the rotor system must overcome any opposing forces, such as aerodynamic drag, ensuring that the helicopter remains stationary in the air. Achieving a state of equilibrium where lift equals weight and thrust equals drag allows the helicopter to hover steadily. This dynamic balance is crucial for various helicopter operations, including takeoffs, landings, and stationary maneuvers.