Bernoulli's equation allows to find the correct result for wing lift is:
1: by forcing air to move faster over the top of the wing
In fluid mechanics that studies the motion of fluids, the conservation of energy and work is given by the Bernoulli equation
P₁ + ½ ρ g v₁² + ρ g y₁ = P₂ + ½ ρ g v₂² + ρ g y₂
Where 1 and 2 are the points of interest, above and below the wing, ρ the density, v the velocity, and y the height.
To simplify, suppose that the wing is horizontal, so the difference in height is the width of the wing, the so-called lift is the difference in pressure between the inner and upper part of the wing.
(P₂-P₁) = ½ ρ (v₁² - v₂²) + ρ g (y₁-y₂)
For a positive lift ΔP> 0 and for the plane to climb, we must have several facts:
- The speed at the bottom (v₁) must be greater than the speed at the top (v₂), this is achieved by making the air have to travel a greater distance at the top.
- The height difference in the wing is small, this is achieved by making the thin ones.
Let's reverse the claims:
1. True. This makes the term of the kinetic energy be greater and there is greater lift.
2. False. If the velocity is the same, the energy difference is zero and the substantiation is zero or negative.
3. False. That makes the lift negative.
In conclusion using Bernoulli's equation we can find the correct result for the wing lift is:
1: by forcing air to move faster over the top of the wing
Learn more here: https://brainly.com/question/5531068
