Buoyancy and Archimedes Principle

Which of the following will float in water? The density of water is 1 g/mL

• Object 1: m = 5 g, and v = 2 mL

• Object 2: m = 3 g, and v = 4 mL

• Object 3: m = 3 g, and v = 1 mL

• Object 4: m = 4 g, and v = 3 mL

"Eureka" is greek for:

• Yippee!

• Hey you!

• I am beautiful

• I found it!

If the weight of the water displaced is the same as the weight of the object placed in the water, the object will sink.

• TRUE

• FALSE

The ship was able to float in the water because its weight was the same as the weight of the water it displaced.

• TRUE

• FALSE

What is buoyant force?

• An upward force exerted by fluids on an object.

• An downward force exerted by fluids on an object.

The up thrust of water acting on a wooden cube of sides 10cm immersed completely in water is

• 2N

• 3N

• 5N

• 10N

The up thrust of the body is equal to the

• weight of liquid

• mass of liquid

• weight of liquid displaced

• density of liquid

What is the mathematical formula for density?

• density = mass x volume

• density = mass + volume

• density = mass / volume

• density = mass - volume

If the weight of an object that is submerged in a fluid is 10 N and the buoyant force on it is 20 N, what will happen to the object?

• It will sink

• It will float

• It will remain in equilibrium

• More information is needed

• It will sink initially, then float

What is Archimedes' Principle?

• The buoyant force is equal to the weight of the object

• The buoyant force is equal to the gravitational force of the fluid

• The buoyant force is equal on all sides of a submerged object

• The buoyant force is equal to the weight of the fluid displaced

• The buoyant force is equal to the mass of the fluid displaced