How plane flies?

Answer 1

An airplane flies mainly due to the lift produced by the wings of it. According to Bernoullie's theorem when air flows across the wing, the velocity of air will be higher in the upper part of the wing compared to the lower part because of the difference in the shape of wing in the upper part and lower part. ( the distance air has to cover is large on the upper part than the lower part of the wing and to cover both the distances in same time, the velocity of air will be more on the upper part)

hence by the relation

P1V1=P2V2

P=pressure (P1= pressure on the upper surface of the wing)

(P2= pressure on the lower part of the wing)

v= velocity(V1=velocity of air in the upper part of the wing)

(V2=velocity of air in the lower part of the wing)

as described earlier V1 will be greater than V2 hence to maintain the equality of the equation P2 will be greater than P1. It means that the pressure on the lower part will be greater than the upper part of the wing and a lift is generated which flies the plane..

there are mainly four forces acting on a plane.

1.Thrust

2.Gravity(weight)

3.Lift

4.Drag

thrust is mainly produced by the air screw or propeller. thrust acts against the drag and lift acts against the gravity. the resultant force of these forces make the plane fly.