Question

The pressure at any point in a static fluid depends only on the Select one a)- depth, surface pressure, and specific weight. b)- specific weight. c)- surface pressure and depth. d)- depth and container shape

Answer 1

Answer:

c). surface pressure and depth

Explanation:

We know that fluid pressure is measured in two different ways namely --

1. Pressure measured above complete vacuum or absolute zero is called Absolute Pressure.

2.Pressure measured above atmospheric pressure is called Gauge Pressure.

In the figure below, we can find the pressure at the point A in the static fluid inside the tank which is at a depth of h from the water surface.

Let the atmospheric pressure which is acting on the water surface be $P_{atm}$.

Let ρ be the density of water and g be the acceleration due to gravity.

Therefore we know that pressure at a point in a fluid is

P = ρ$\times$g$\times$h

Therefore total pressure acting on the point A in a fluid is

$P_{tot}$ = $P_{atm}$ + P

$P_{tot}$ = $P_{atm}$ + ρ$\times$g$\times$h

Thus, pressure at a point A in a static fluid depends on the surface pressure and the depth of the point from the free surface.