Water is discharged from the tank in the manner shown. At which point is the pressure the least?

Question

Quizplus · Accepted Answer

The pressure at each point in a fluid depends on the depth of the fluid above the point, assuming the fluid is at rest. The pressure is given by the formula P = ρgh, where P is the pressure, ρ is the density of the fluid, g is the gravitational constant, and h is the depth of the fluid. 
At point 1, the depth of the fluid above the point is highest, so the pressure is greatest.
At point 4, the fluid has been discharged, so there is no fluid above the point and the pressure is zero.
Therefore, the pressure is least at point 2, where the depth of the fluid above the point is the least.

Water Is Discharged from the Tank in the Manner Shown