If the density of a fluid varies with depth, then the pressure at depth y is p(y) (which
Chapter 8, Problem 28(choose chapter or problem)
If the density of a fluid varies with depth, then the pressure at depth y is p(y) (which need not equal wy as in the case of constant density). Use Riemann sums to argue that the total force F on the flat side of a submerged object submerged vertically is F = b a f (y)p(y) dy, where f (y) is the width of the side at depth y.
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer