Question

considering the lift force on an airplane,
according to bernoulli's principle, kinetic, potential and pressure energies must remain a constant.
so as pressure above the wing decreases(due to increase in speed of air flow), what increases?potential or kinetic energy?

Answer 1

i done this same question but not remeber the reason clearly but the ans is potential energy.
i have roughly idea it is due to in wings the presure in downward i more and velcoity i less mean while in above the wing velocity is more and presure is less and these two balances each other which make them constant in this case potential energy increases

Answer 2

thank u.. :)

Answer 3

ohhh i guess he is rite

Answer 4

sorry she**

Answer 5

:)

Answer 6

it is potential energy :)

Answer 7

I highly doubt the answer that's the question is looking for is potential. It's true that since the top of the wing is above the bottom, the gravitational potential energy is higher, but by a very very small amount. The big increase is in the kinetic energy due to the increased velocity.

Answer 8

Whether or not the lift effect can be entirely attributed to Bernoulli's principle is a different story (it cannot).

Answer 9

Bernoulli's principle says the following must be constant:
\[P_0 + \rho gh + \frac{1}{2} \rho v^2 \]
The questions says P0 goes down, so which increases? And the answer is velocity (and a little eensy weensy bit of height).