How does the air planes fly against gravitational force?

Question

when project any thing up it will fall down due to gravitational
pull of the earth,then how the planes fly up without falling down

Answer 1

Because of the balance of four forces. 1.The lifting force on the wings help the plane counteract the 2. force of gravity. This is attained after the plane had sufficient 3. thrust ( a force component also) as a result of the burning of jet fuel. The energy from burning is enough to propel the plane to go forward. As the plane glides forward, it must overcome the 4. air resistance and wind forces acting against it. As the jet generates speed the airflow of the air masses under and over the wings undergo the so-called Bernoulli effect. That is, the pressure under the wings are greater than the pressure over the wings causing more lifting force. This differential in pressure over the wings is mostly responsible in creating the lifting force to counteract the force of gravity. And of course to stay afloat in the air in the correct direction, you need the expertise of the pilot or an autopilot.

Happy landing!

Answer 2

It Is Because The Lift From The Wings Counters The Gravitational Pull Of The Earth.

Answer 3

It is because the air planes fly above in the sky and the wings will act in such a way that the pressure of the air high above the ground where the Plane is flying to be in an state that will enable the Plane to fly that is the pressure above the wing will be low and below the wing will be very high. This U can see when U R traveling in a highspeed train the air will be blowing on U R face with great pressure. If U R standing above the train say in a Overbridge the pressure will be totally reduced.

Answer 4

The gravitational force of the Earth's atmosphere is somewhere around 14-15 pounds per square inch. The thrust form the airplane is much more that that. Let's say (since I don't know what kind of engine is in the airplane) it exerts a driving force of 28-30 pounds per square inc. The airplane would go at 1-2 miles per hour because the force it expended would be 1 degree more than the normal gravitational "opposing" force. Apply the gradients and then you fly.

Answer 5

With the help of bournalies theorem the planes fly against gravitational force.

Answer 6

Birds and insects can fly against the pull of gravity as well.
Its all a matter of weight vs. lift.
The wings of the plane (or bird or insect) provide lift when air moves over and under the wing, and there is enough lift (as long as they keep moving) to overcome gravity.

Answer 7

Sorry Aldo..............It's not the Bernoulli effect, it's just Newton's Law !!!!!!

The air is forced down by the wing, and the reaction force causes lift on the wing and the plane...............

" Aerodynamic lift of a wing can be explained and calculated through simple application of Newtonian physics. " from "Stop abusing Bernoulli ! How Airplanes Really Fly" ............see the link provided............

"The lift of a wing is equal to the change in momentum of the air it is diverting down.".........see the second link........

And a third link by Terrycolon , and a little easier one to follow........

Answer 8

Aerodynamics!
Their forward velocity causes air to travel over the top and bottom of the wings at different rates, inducing a higher upward force under the wings, thus causing lift.
It's simple, but amazing.

Answer 9

Through something called lift.

Do you see how bird's wings are designed? Well planes are designed to have the same effect. That effect being lift.

Lift is caused with wings as the wings themselves actually 'push' the air flowing past them downwards. Pushing the rest of the plane up (Newton's Laws!)

Answer 10

fuel, powers plane

plane flies or glides through air

its called thrust