A person can descend to a depth of 9 meters. calculate the water pressure on a person at this depth.
| April 23, 2021 | education
h = 9 m.
ρ = 1030 kg / m ^ 3.
g = 9.8 m / s ^ 2.
Ratm = 101325 Pa.
Pch -?
The pressure on a person Рч will be the sum of: Patm – atmospheric pressure and Р – hydrostatic pressure of the liquid column.
Ph = Patm + P.
The hydrostatic pressure of the liquid at the bottom is determined by the formula: P = ρ * g * h. Where ρ is the density of the fluid in which the body is immersed, g is the acceleration of gravity, h is the height of the fluid, in our case the depth.
P = 1030 kg / m ^ 3 * 9.8 m / s ^ 2 * 9 m = 90846 Pa.
Ph = 101325 Pa + 90846 Pa = 192171 Pa.
Answer: the water pressure on a person under water is Ph = 192171 Pa.
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