**
LESSON 3. Indirect Methods to Solve Problems (Lab)**
An equation is a
mathematical statement in symbols that states how things are equivalent or the
same. Equations need to incorporate an equal sign. For example: 2+10 = 12.
**Equations** can help calculate unknown quantities if only certain
properties are known. Developing **formulas** that take into account
properties can help figure out unknowns easier. Equations follow rules and
have defined properties in order to solve equations. We will use volume,
mass, and density to try and directly measure a quantity and then use a
formula to find a quantity that you cannot measure.
In ancient Greece there
was a problem in how to measure **volume** of irregular objects. **
Archimedes** was the first to discover the **Law of Buoyancy** (**Archimedes’
principle**) which addresses this problem. This law states that the **mass**
of the displaced fluid is directly **proportional** to the **volume** of
the displaced fluid. Rumor has it, that Archimedes’s was taking a bath and
when he filled the water too high, it made him realize how fluid is displace.
He supposedly ran out of the tub into the city of Syracuse (Greece), naked,
yelling “Eureka, I found it.” |