AP Physics 2: Fluid Statics

If we place an empty sealed plastic bottle in water, we know it will float. What could we do to make it sink?

• You can't make a plastic bottle sink

• Increase mass (fill it with coins)

• Fill the bottle with helium

• Decrease mass (use a bottle made out of lighter plastic)

Tags

NGSS.MS-PS2-2

A hydraulic lift has a left and right column of different areas. Which side should a car be placed on to be lifted by the system with the least input force?

• A₁

• ^A₂

• Same

Students are competing to build the best cardboard boat. While they are in the water, the water level is marked on the side of the pool. If a third student jumps into the boat, the water level will ________.

• rise

• fall

• stay the same

Four blocks are suspended in water as shown. Which blocks experiences the greatest buoyant force?

• A

• B

• C

• D

Which string will have the largest tension?

• A

• B

• C

• D

Archimedes' Principle states that... 

• The buoyant force acting on an object equals the volume of the fluid displaced by the object. 
• The buoyant force acting on an object equals the weight (force of gravity) of the fluid displaced by the object.
• The buoyant force acting on an object will always be equal. 

Tags

NGSS.MS-PS2-5

Buoyancy is the tendency for objects to float in a fluid. Buoyancy pushes the opposite direction of...

• waves push.
• magnetic pull.
• the wind.
• gravity's pull

This is what happens to an object when the buoyant force is stronger than the gravitational force.

• sinks

• floats

• neutrally buyant

• I don't know...

Which properties affect buoyancy?

(select all that apply)

• Mass

• Volume

• Density

• Luster