Hydrostatic pressure is the pressure exerted by a fluid at equilibrium due to the force of gravity.

5. Today we will present a
lesson about hydrostatic
pressure.

6. HYDROSTATIC
Density Pressure PRESSURE
Problems and Answer

7. Density

8. Pressure is force that acting on an object divided
by its area.
Mathematically:
P= Pressure ( N/m2 = Pascal)
F
P F= Force (N)
A A= Surface Area (m2)

9. Hydrostatic pressure is the pressure exerted by a fluid at
equilibrium due to the force of gravity.

10. Hydrostatic pressure can be calculated with the
formula:
Where:
Ph = Hydrostatic pressure (Pa or N/m2)
ρ = Density of liquid (kg/m3 )
g = earth’s gravity (m/s2)
h = Depth (m)

11. If the container is open so there is atmosphere pressure from
the air to the surface of liquid…
The pressure become: P0 = Atmospheric pressure (1 atm = 76 cmHg =
1.013 x 105 Pa)
P = P0 + Ph = P0 + ρgh

12. A tube with height 50 cm filled with water. If the
density of the water 1 gr/cm3 and the gravitational
force is 10 m/s2 then the hydrostatic pressure in the
bottom of the tube is….
Calculating…
Completed
Calculate
Known:
ρ = 1 gr/cm3 = 1000 kg/m3
g = 10 m/s2
h = 50 cm = 0,5 m
Asked: Ph....?

13. In the glass cylinder there are 20 cm oil. With
ignoring the outside pressure, the pressure on the
bottom of the cylinder is 1600 N/m2. What is the
density of the oil?
Calculating…
Completed
Calculate
Known:
Ph = 1600 N/m2
g = 10 m/s2
h = 20 cm = 0,2 m
Asked: ρ....?

15. Thank you for the attention and
participation to our presentation.
Om Shanti,