Levers are Simple Machines Part 1
Filed Under CSET Multiple Subject |
Excerpt from the CSET Study Guide
Teacher candidates studying for the CSET Multiple Subjects exam should know a little about levers.
Levers were first described about 260 BC by the ancient Greek mathematician Archimedes (287-212 BC).
A lever is a simple machine that makes work easier as it involves moving a load around a pivot using force.
There are three types of levers: first class, second class, and third class.
In a first class lever, the pivot (fulcrum) is between the force and the load.
Examples of first class levers include:
In a second class lever, the load is between the pivot (fulcrum) and the force.
Examples of second class levers include:
Gravity is a law. Lawbreakers will be brought down!
By Shiela King
http://www.ACEtheCSET.com
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