How does the 747 lift off the ground?

Answer 1

The engines provide thrust, making the plane move forward. As the plane picks up speed the air flows over the wing, creating lift. Once the lift reaches a certain amount, the plane lifts off the ground.

Answer 2

The 747 achieves lift off through a combination of factors. As the aircraft gains speed down the runway, air flowing over the wings create lift due to the shape of the wings and the angle of attack. Once a sufficient amount of lift is generated, the pilot will rotate the nose of the plane upwards to take off.