Understanding Buoyancy and Archimedes' Principle

What is buoyancy?

• A force that acts upward on an object in a fluid

• A force that acts only on solid objects

• A force that acts downward on an object in a fluid

• A force that acts sideways on an object in a fluid

Which of the following statements is true about objects in a fluid?

• Objects in a fluid do not experience any force

• Objects in a fluid weigh more than in air

• Objects in a fluid weigh the same as in air

• Objects in a fluid weigh less than in air

What happens when the buoyant force is greater than the gravitational force on an object?

• The object sinks

• The object remains stationary

• The object floats

• The object moves sideways

When an object is neutrally buoyant, what can be said about the forces acting on it?

• The buoyant force is greater than the gravitational force

• The buoyant force is less than the gravitational force

• The buoyant force is equal to the gravitational force

• There are no forces acting on the object

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

• Pressure is the force minus the area

• Pressure is the force divided by volume

• Pressure is the force times the area

• Pressure is the force per unit area

How is the buoyant force calculated using the density of the fluid?

• Buoyant force is the density of the object times gravity times volume

• Buoyant force is the density of the fluid times gravity times volume

• Buoyant force is the density of the fluid times area times height

• Buoyant force is the density of the object times area times height

According to Archimedes' Principle, what is the buoyant force equal to?

• The weight of the object

• The weight of the fluid displaced by the object

• The volume of the object

• The density of the object

What happens to the volume of the fluid displaced when an object is fully submerged?

• It is unrelated to the volume of the object

• It is equal to the volume of the object

• It is less than the volume of the object

• It is greater than the volume of the object

In the example problem, what is the buoyant force acting on the submerged ducky?

• 600 Newtons

• 100 Newtons

• 483 Newtons

• 302 Newtons

Why does the buoyant force remain constant as the ducky is lifted?

• Because the density of the fluid changes

• Because the change in height remains the same

• Because the volume of the object changes

• Because the gravitational force changes