15.2. Buoyancy of Fluids http://www.ck12.org
FIGURE 15.15
Archimedes’ law explains why a heavy
ship floats. Its shape causes it to dis-
place more water than a ball of the same
weight.Apply Concepts
- Apply Archimedes’ law to explain why some very heavy objects float in water.
Think Critically
- Relate displacement of a fluid by an object to the buoyant force acting on the object.
Points to Consider
In this chapter, you saw how pressure and buoyancy of fluids can be used to make work easier —from raising a car
on a lift to floating a ship on the ocean. Devices that make work easier are called machines in physics.
- What are some examples of machines?
- How do these machines make work easier?