Consider three drinking glasses. All three have the same area base, and all three are filled to the same depth with water. Glass A is cylindrical. Glass B is wider at the top than at the bottom, and so holds more water than A. Glass C is narrower at the top than at the bottom, and so holds less water than A. Which glass has the greatest liquid pressure at the bottom?

i have narrowed it down to either:

A)all 3 have equal non-zero pressure at the bottom

or

B) All 3 have zero pressure at the bottom

Question

Consider three drinking glasses.  All three have the same area base, and all three are filled to the same depth with water.  Glass A is cylindrical.  Glass B is wider at the top than at the bottom, and so holds more water than A.  Glass C is narrower at the top than at the bottom, and so holds less water than A.  Which glass has the greatest liquid pressure at the bottom?

i have narrowed it down to either:

A)all 3 have equal non-zero pressure at the bottom 
 
or 

B) All 3 have zero pressure at the bottom

fifciol · Answer

according to Pascal's principle pressure is the same at the bottom no matter what is the shape of an object. At the bottom it's simply 
$$P=\rho g h$$
where h is the height of an object
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