Consider water being drained from a cylindrical container of diameter D through

Question

Consider water being drained from a cylindrical container of diameter D through a hole in the cap, of diameter d (see figure below). Let A be a point on the surface of the water and let B be a point right at the hole. The level of water is h above the hole.

What is the pressure at point A?

a. pA < patmospheric

b. pA = patmospheric

c. pA > patmospheric

What is the pressure at point B (when the hole is open and water is flowing)?

a. pB < patmospheric

b. pB = patmospheric

c. pB > patmospheric

Explanation / Answer

b. pA = patmospheric b. pB = patmospheric

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