Fluid Statics

What is the formula for pressure in fluids?

• Pressure = Mass / Volume

• Pressure = Density / Volume

• Pressure = Volume / Area

• Pressure = Force / Area

State Pascal's principle.

• Pascal's principle only applies to gases, not liquids

• Pressure applied to a fluid is inversely proportional to the volume of the fluid

• A change in pressure applied to an enclosed fluid is transmitted undiminished to all portions of the fluid and to the walls of its container.

• Fluid pressure is only transmitted to the bottom of the container

Explain how buoyant force works.

• Buoyant force works by pulling an object downwards in a fluid.

• Buoyant force works by pushing an object upwards in a fluid, counteracting the force of gravity.

• Buoyant force works by increasing the weight of an object in a fluid.

• Buoyant force works by creating a vacuum around an object in a fluid.

What is the SI unit of pressure?

• Tesla

• Pascal (Pa)

• Joule

• Newton

How does the pressure change with depth in a fluid?

• The pressure increases with depth in a fluid.

• The pressure fluctuates randomly with depth in a fluid.

• The pressure remains constant with depth in a fluid.

• The pressure decreases with depth in a fluid.

Define Archimedes' principle.

• The buoyant force on an object is unrelated to the fluid it displaces

• A body immersed in a fluid experiences a downward buoyant force

• A body immersed in a fluid experiences an upward buoyant force equal to the weight of the fluid it displaces.

• Archimedes' principle states that objects sink in fluids due to their weight

What is the relationship between pressure and area in a fluid?

• Inverse relationship

• Exponential relationship

• No relationship

• Direct relationship

Why does an object float or sink in a fluid?

• Related to the temperature of the fluid

• Based on the density of the object compared to the density of the fluid.

• Determined by the shape of the object

• Depends on the color of the object

How is pressure distributed in a fluid at rest?

• Pressure is lower at the top of a fluid at rest.

• Pressure is higher at the bottom of a fluid at rest.

• Pressure is only distributed vertically in a fluid at rest.

• Pressure is distributed equally in all directions within a fluid at rest.

What is the significance of Pascal's principle in hydraulic systems?

• Pascal's principle is used for electrical circuits.

• Pascal's principle is related to quantum mechanics.

• Pascal's principle is only applicable in biology.

• Pascal's principle allows for the multiplication of force in hydraulic systems.