Fluid statics

What is the basic relationship between depth (h) and pressure (P) under the surface of water?

• P decrease with increasing h

• P increase with increasing h

• It does not related

Choose the correct unit of pressure (P).

• N/m2

• bar

• Pa

• All of them

Pressure is the term used for a force distributed over an area

P=F/A

• True

• False

The absolute pressure of the surrounding atmosphere is approximately 101.3 kPa

• True

• False

The gage pressure reads zero kPa of the surrounding atmosphere.

• True

• False

When you dive underwater, the pressure you feel in your ears increases with depth.

• True

• False

At the surface of water, the gage pressure on the surface of water is zero (0 Pa) no matter which system you use (tank, fishwater, sea, cup of water) .

• True

• False

Choose the multi-correct answers: The fluid pressure P increases with:

• depth under the fluid

• Density of the fluid

• Gravity

• Area of the surface

Find the pressure P under 1 m of the water surface. g=9.8 m/s2, density=1000 kg/m3.

• 9800 Pa

• 9800 N

• 1000 Pa

• 500 Pa

How to fnd the Equivalent force of the distruputed pressure under water in the shown graph?

• F=P*h/2= 1/2*ρ*g*h²

• F=P*h=1/2*ρ*g

• F=P*h/3=1/3*ρ*h²