0
$\begingroup$

enter image description here

This is from knight.

What I don't get is why $p_1=p_2$. I don't think we can use the hydro static pressure formula because the top and bottom of a cone are not identical. I get why pressure at the top and bottom must be equal, but why can't the pressure at the middle be different?

Thank you

Improve this question
$\endgroup$
1
  • $\begingroup$ Experimental evidence has shown that p1=p2. $\endgroup$
    – David White
    Commented Jan 12, 2021 at 3:02

1 Answer 1

Reset to default
1
$\begingroup$

Water pressure increases with depth not width. Since p1 and p2 are at the same depth and have the same atmospheric pressure above, p1=p2. Water pressure increases about 1.47 pounds per square inch for each meter of depth no matter what the size or shape of the container, as long as the container is not so narrow that the capillary effect occurs.

Improve this answer
$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.