If lift exceeds weight, what happens?

If lift exceeds weight, what happens?

• A. The aircraft will sink
• B. The aircraft will accelerate forward
• C. The aircraft will climb or stay aloft
• D. The aircraft will stall

Answer: (C)

The important idea here is vertical force balance: lift versus weight. Lift pushing up against gravity creates the net vertical force. When lift is greater than weight, there’s a positive upward force, so the aircraft rises and climbs (or continues to rise if already climbing). In steady level flight lift would need to equal weight, so this situation specifically drives ascent. Thrust and drag affect forward speed, not the vertical balance, while a sink would happen if lift were less than weight, and a stall involves a loss of lift due to a high angle of attack, not simply lift exceeding weight.

The important idea here is vertical force balance: lift versus weight. Lift pushing up against gravity creates the net vertical force. When lift is greater than weight, there’s a positive upward force, so the aircraft rises and climbs (or continues to rise if already climbing). In steady level flight lift would need to equal weight, so this situation specifically drives ascent. Thrust and drag affect forward speed, not the vertical balance, while a sink would happen if lift were less than weight, and a stall involves a loss of lift due to a high angle of attack, not simply lift exceeding weight.