What am I missing here?
Say you have a hose and you pinch the end. I'm going to absurdly conclude the speed should be the same.
If I have a tank of water and at height 0 I punch a hole of area A, what speed does the water come out at?
By Bernoulli's Principle:
v^2 /2 + gh + p/? = C
Inside the very large tank the speed is 0 and the height is 0, giving us:
p/? = C
Outside the pressure is 0 and the height is 0, giving us:
v^2 /2 = C
Therefore:
v^2= 2 p/?
Which tells us that the speed the fluid comes out has NOTHING to do with the area of the hole.
And therefore pinching a hole in a hose does nothing.
This is obviously wrong. What happened?
Say you have a hose and you pinch the end. I'm going to absurdly conclude the speed should be the same.
If I have a tank of water and at height 0 I punch a hole of area A, what speed does the water come out at?
By Bernoulli's Principle:
v^2 /2 + gh + p/? = C
Inside the very large tank the speed is 0 and the height is 0, giving us:
p/? = C
Outside the pressure is 0 and the height is 0, giving us:
v^2 /2 = C
Therefore:
v^2= 2 p/?
Which tells us that the speed the fluid comes out has NOTHING to do with the area of the hole.
And therefore pinching a hole in a hose does nothing.
This is obviously wrong. What happened?
