Forces in Fluids Review

Front

What is buoyant force?

Back

Buoyant force is the upward force exerted by a fluid on an object that is submerged or floating in it.

Front

What factors affect the level at which a cargo ship floats?

Back

The mass of the ship’s cargo, the volume of the ship, and the density of the ship’s material affect the floating level. The depth of the water does not affect it.

Front

What happens when an object displaces a volume of fluid?

Back

An object displaces a volume of fluid that is equal to its own volume.

Front

True or False: All fluids exert an upward force called buoyant force.

Back

True

Front

If an object weighs 20 N and displaces water weighing 15 N, what is the buoyant force?

Back

15 N

Front

How does drag force change with speed?

Back

Drag force increases with speed.

Front

What is the relationship between the density of an object and its ability to float?

Back

An object will float if its density is less than the density of the fluid it is in.

Front

What is the principle of Archimedes?

Back

The principle of Archimedes states that an object submerged in a fluid experiences a buoyant force equal to the weight of the fluid displaced.

Front

What is fluid pressure?

Back

Fluid pressure is the force exerted by a fluid per unit area on an object.

Front

How does depth affect fluid pressure?

Back

Fluid pressure increases with depth due to the weight of the fluid above.