At a fixed point inside an enclosed liquid at rest
PHYSICS · Single correct · AP · Physics 1: Algebra-based · Fluids · Fluids
Problem
At a fixed point O inside an enclosed liquid at rest, imagine four tiny surfaces of identical area oriented upward, downward, leftward and rightward respectively. Which one of the following statements is true regarding the pressures on these surfaces?
(a) Pressure is greatest on the downward-facing surface only.
(b) Pressure on the horizontal surfaces is greater than on the vertical ones but equal to each other.
(c) Pressure has the same value on all the four surfaces.
(d) Pressure is zero on the upward-facing surface because it opposes gravity.