1. Simple Machines By Greg Corder

2. Table of Contents Work Levers (1 st, 2 nd, and 3 rd Class) Inclined Plane Screw and Wedge Pulleys Wheel and Axle Sources

3. Work = Force X Distance Simple machines conserve work! That means that you get back the same work from the machine that you put in. For example, Work = Force X Distance

4. In other words:

7. The 6 Simple Machines!

8. 1 st Class Lever See-saw, crowbar, etc

10. 2 nd Class Lever Wheelbarrow, door, etc.

12. 3 rd Class Lever Fishing pole, broom, bat, golf club, etc.

14. Inclined Plane Ramp, Stairs, etc.

15. Wedge and Screw Doorstop, nail, chisel, etc. Corkscrew, nut/bolt, etc.

16. Pulleys Elevator, flagpole, etc.

17. Wheel and Axle Doorknob, screwdriver, pencil sharpener

18. Sources http://www.mos.org/sln/Leonardo/Inventors Toolbox.htmlhttp://www.mos.org/sln/Leonardo/Inventors Toolbox.html http://oldsci.eiu.edu/Physics/DDavis/3050/ Ch06WrkEnrg/levers.htmlhttp://oldsci.eiu.edu/Physics/DDavis/3050/ Ch06WrkEnrg/levers.html http://www.uark.edu/depts/aeedhp/agscienc e/simpmach.htmhttp://www.uark.edu/depts/aeedhp/agscienc e/simpmach.htm http://www.enchantedlearning.com/physics/ machines/Levers.shtmlhttp://www.enchantedlearning.com/physics/ machines/Levers.shtml