11.2.1. Discussing Buoyancy and Archimedes' Principle

Try these first

1. 1.

   What is buoyancy?

   Hint

   Consider how objects behave in water.

2. 2.

   What does Archimedes' principle state?

   Hint

   Think about displaced water when an object sinks.

3. 3.

   What does Archimedes' principle state?

   • A. An object will float if its density is less than the fluid's density
   • B. The buoyant force is equal to weight of fluid displaced
   • C. Buoyancy only applies to ships
   • D. Only solid objects experience buoyancy

   Hint

   Think of how objects behave in water.

4. 4.

   True or False: The center of buoyancy is the centroid of the displaced volume.

   • True
   • False

   Hint

   Relate this to how shape affects buoyancy.

5. 5.

   A 2 m³ block of wood with a density of 600 kg/m³ is floating in water. Calculate the depth to which the block is submerged. (Density of water = 1000 kg/m³)

   Hint

   Use the volume ratio based on densities.

6. 6.

   An object has a weight of 300 N when submerged in a fluid. If the buoyant force acting on it is 350 N, will the object sink, float, or be neutrally buoyant?

   Hint

   Compare the weight to the buoyant force to assess floating vs. sinking.