- #1
Fanaticus
- 17
- 0
So, I have in my mind an apparent contradiction that hopefully can be cleared up.
From early lessons we learn that an objects velocity in an x direction has no effect on its velocity in the y direction. So, the y component of a particles velocity is not effected when we change its x component of velocity. If we have a whole ensemble of particles, it should reason that the sum of their y components of velocity would also be unaffected by a change in their net x velocity. Now the average y velocities of an ensemble of particles determine what pressure is measured, so the pressure should not change.
But Bernoulli's equation says just the opposite... It says that if you increase the velocity in the x direction, the pressure drops. But the pressure comes from the particle's velocities in the y direction!
I think you can see my confusion at this apparent contradiction. Help me understand what is really going on!
Thx alot
From early lessons we learn that an objects velocity in an x direction has no effect on its velocity in the y direction. So, the y component of a particles velocity is not effected when we change its x component of velocity. If we have a whole ensemble of particles, it should reason that the sum of their y components of velocity would also be unaffected by a change in their net x velocity. Now the average y velocities of an ensemble of particles determine what pressure is measured, so the pressure should not change.
But Bernoulli's equation says just the opposite... It says that if you increase the velocity in the x direction, the pressure drops. But the pressure comes from the particle's velocities in the y direction!
I think you can see my confusion at this apparent contradiction. Help me understand what is really going on!
Thx alot