1.5. Buoyant force

Try these first

1. 1.

   What is buoyant force?

   Hint

   Think about how objects float on water.

2. 2.

   What determines buoyant force?

   Hint

   Consider Archimedes' principle.

3. 3.

   What causes an object to float?

   • Weight of the object
   • Buoyant force
   • Shape of the object

   Hint

   Think about how a boat stays above water.

4. 4.

   Buoyant force is always equal to the weight of the liquid displaced.

   • True
   • False

   Hint

   Refer to the definition of buoyancy.

5. 5.

   A cube with a volume of 0.5 m³, made of metal with a density of 7800 kg/m³, is placed in water. Determine whether it will float or sink.

   Hint

   Compare weights with buoyancy.

6. 6.

   An object submerged in two liquids with densities of 800 kg/m³ and 1200 kg/m³ experiences a buoyant force of 100 N when fully submerged in both. What can you determine about its ability to float?

   Hint

   Focus on how different liquid densities affect buoyancy.