5.10 Hydrostatic pressure

What is hydrostatic pressure?

• The pressure exerted by a fluid at equilibrium due to the force of gravity

• The pressure exerted by a solid object under stress

• The pressure inside a closed container not influenced by gravity

• The atmospheric pressure at sea level

Which formula is used to calculate hydrostatic pressure?

• P = 1/2 ρv^2

• P = mgh

• P = ρgh

• P = mg/r^2

What does 'ρ' represent in the hydrostatic pressure formula?

• Height of the liquid column

• Pressure of the liquid

• Volume of the liquid

• Density of the liquid

What is the acceleration due to gravity (g) taken as in the hydrostatic pressure formula?

• 10 m/s^2

• 9.82 m/s^2

• 9.81 m/s^2

• 9.8 m/s^2

On what does the hydrostatic pressure in a fluid depend?

• Depth in the fluid

• Volume of the liquid

• Mass of the liquid

• Surface area of the container

What is the centre of pressure?

• The highest point in a fluid column

• The lowest point in a fluid column

• The location of the point of action of the hydrostatic force

• The midpoint of the fluid column

How is the thrust force on a submerged surface calculated?

• F = ρgAx

• F = P/A

• F = mg

• F = ρgh

What does the 'A' represent in the formula for calculating thrust force?

• Amplitude of the wave in the fluid

• Area of submerged surface

• Average pressure on the surface

• Acceleration due to gravity

What is the thrust force acting on a surface with width 1 m and height from 0 m to 2 m in a water-filled container?

• 19.6 kN

• 19.6 N

• 196 N

• 1960 N

What does the hydrostatic pressure formula not depend on?

• The density of the fluid

• The height of the fluid column

• The depth of the fluid

• The shape of the container