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Because the path it takes is longer.
This is the Bernoulli effect.
Be aware that the small amount of upward force from the Bernoulli effect IS NOT the principal force that allows an aircraft to fly.
Be aware that the explanations you read in most textbooks ARE NOT the correct explanations for aerofoil lift.
To prove this is so, your task is to explain how an aircraft can fly inverted.
According to the "Bernoulli effect" explanation, the aircraft should plummet towards the ground at an acceleration of 2g.
What else can I help you with?
How does a airfoil generate lift?
the wind goes over the wing and above it so the air on the bottom is going faster because it has less space to travel forcing the wing up
What is the factor described by Bernoulli's principle that allows airplanes?
Air over the upper surface of the airfoil is induced to move faster than that under its lower surface thus, according to Bernoull's principle, creating a region of lower pressure above the airfoil and a net lift on the airfoil.
Is it true that air above the wing of an airplane travels faster than air below the wing?
Airplane wings are shaped such that the length of a path from the leading edge of a wing to the trailing edge is longer when going over the top than across the bottom. For this reason, air going over the wing must travel faster than air traveling beneath the wing.
Does sound travels faster in fresh water air steelor the same speed in all of the above?
sound travel faster in air then in any other
What is Force of lift?
The force of lift is what makes airplanes fly. It results from an effect called the Bernoulli Effect when air passes over and airfoil, a surface which is curved on the top and flat on the bottom. The air passing over the upper surface has farther to go and therefore goes faster than that passing over the lower surface. The faster-moving air causes the pressure above the airfoil to reduce, causing the wing to rise.
Why do you travel by air?
It's faster to travel by air.
How does the design of an airfoil contribute to the generation of lift in an aircraft?
The design of an airfoil, which is the shape of the wing, contributes to the generation of lift in an aircraft by creating a pressure difference between the upper and lower surfaces of the wing. This pressure difference causes the air above the wing to move faster than the air below, creating lift as a result of the Bernoulli principle.
Why is air pressure greater below the wing's surface?
It's not so much that the air pressure below a wing is greater as it is the pressure above it is less. The way a wing works, is the airfoil (shape of the wing) accelerates the air above the wing. Since the air is moving faster, it lowers the air pressure, resulting in a lower pressure above, and a higher(standard) pressure below, creating lift.
What gives a plane most of its lift?
If we slice the wing of a typical commercial airplane and look at its cross-section, its shape looks like a stretched-out water droplet. This aerodynamic shape is referred to as an airfoil. Usually, the position of the airfoil in flight is set at an angle so that air first hits the wing's front edge and bottom. This causes the air stream to split. The air above the wing travels faster over a curved surface than the air below the wing. The faster air has a lower pressure than the slower air, and it is this pressure difference that generates lift.
What is important about a bird's wing's shape?
A bird's wing is shape like an airfoil. (See the related link Diagram of an airfoil below.) The airfoil is curved more on top, so the air flowing over the top of the airfoil moves faster that the air underneath. This creates more pressure underneath the wing, pushing up and generating a force called lift. This force keeps the birds in the air. (This is also how the wings of an airplane work.)
Does the shape of an airfoil cause the top of an airplane wing to travel faster or slower than the air underneath the wing?
Faster. This is how lift is produced over the surface of the wing because the pressure is decreased over the top surface Lift=Coefficient of lift x 0.5density of air x speed (squared) x surface area.
What type of air does sound travel faster in?
Sound travels faster in moist air
