The Buoyant Force

The weight of a stone is 20 N. When it is immersed in water, its weight is 15 N. What is the buoyant force acting on the stone?

• 2 N

• 3 N

• 4 N

• 5 N

Diagram shows an investigation conducted by Mazni. How much is the buoyant force exerted on the object when it was in the water?

• 1.07 N

• 0.28 N

• 0.27 N

• 1.68 N

A buoyant force is an upward force applied on an object by a ___________

• substance

• fluid

• pressure

• displacement

When the weight of an object is greater than the buoyant force, the object will ...

• sink

• float

• expand

• shrink

An upward force applied by a fluid on an object in the fluid

• Bernoulli

• Buoyant force

• gravity

• Archimedes

• A

• B

• C

• D

What unit is commonly used to measure buoyant force?

• Pascal

• Newton

• Joule

• Watt

Why do objects float in water according to the principle of buoyancy?

• Because they are lighter than air

• Because they are completely submerged in water

• Because the upward buoyant force on the object is greater than the object's weight

• Because they are made of material that repels water

What happens to an object when the force of gravity is greater than the force of buoyancy?

• It floats

• It sinks

• It stays in place

• It moves sideways

Tags

NGSS.MS-PS2-4

If an object is more dense than the fluid which it is in, the buoyant force will be less and the object will ... 

• float

• sink

• shrink

• expand