00:01
We are dealing with an incompressible fluid that is flowing through a tube.
00:05
This tube has one end that has a large diameter, so we're going to call that a, and another end that has a smaller diameter, which we're going to call b.
00:14
And we want to know how can you relate the flow of the fluid through this tube.
00:20
And so let's look at what happens.
00:22
So at each section of the tube, you have to have this same mass of fluid flowing in the same amount of time.
00:28
That's called volume flow rate.
00:31
The same volume of fluid will flow through here in the same amount of time that will flow through here.
00:38
And so what that tells us is that when fluid moves into a smaller section, it has to move faster to keep up with that flow rate.
00:48
So in smaller diameters, fluid moves faster.
00:52
And in larger diameters, it moves slower.
00:58
And so why is that? that's because the pressure is lower.
01:04
So faster speed here means it has lower pressure.
01:12
So that will help with the answer.
01:15
Higher speed, slower speed has higher pressure.
01:19
They're inverses...