6 Simple Machines

1. 6 Simple Machines By: Jessica Brogan, Hatcher Ballard, and Katie News

2. Table of Contents • Wheel and Axle • Wedge • Lever • Inclined Plane • Screw • Pulley • Compound Machines • References

3. Wheel and Axle • There are 2 ways to work a wheel and axel. First you can us it by having two wheels at the end of a axle. The wheels will then roll providing movement. • The second way is to wrap a rope around a supported wheel with a lever sticking out. An object can be tied to the other end. By turning the lever, the rope either moves the object toward or away from you. • The wheel and axel is one of the 6 simple machines. • It is made of two circular objects that are out together and rotate in a common axis. Back to TOC

4. Wedge • A wedge is used to separate two objects, or to lift something • The wedge has been used since the stone age • A wedge can also be used to hold an object in place, for example a door stop is a wedge picture from http://en.wikipedia.org/wiki/Wedge_%28mechanical_device%29 Back to TOC

5. Lever • There are 3 types of levers, 1st , 2nd , and 3rd • The type of lever depends on the input effort First Class Second Class Third Class Back to TOC Back to TOC

6. Incline Plane • A flat surface with different size endpoints. • Examples: -Wedges -Ramp -Airplane wings -Plows -hatchets Back to TOC

7. Incline Plane (cont.) • The force is normally directed away from the object (in picture) • Used to raise and object. • Less effort is needed to raise the object when you are using an Inclined Plane. Back to TOC

8. Incline Plane • A flat surface with different size endpoints. • Examples: -Wedges -Ramp -Airplane wings -Plows -hatchets

9. Incline Plane (cont.) • The force is normally directed away from the object (in picture) • Used to raise and object. • Less effort is needed to raise the object when you are using an Inclined Plane.

10. Screw Notes • Screws are related to a inclined plane. • When you use a screwdriver to twist a screw into a piece of wood you put a input force on the screw, then they put an output force on the wood. Back to TOC

11. Screw Notes continued • The screw is really a inclined plane with a wedge tip. • The inclined plane is the thread wrapped around the screw. • The wider the thread of the screw the harder it is to turn. Back to TOC

12. References • http://en.wikipedia.org/wiki/Pulley • http://en.wikipedia.org/wiki/Wedge_%28mechanical_device%29 Back to TOC

13. Resources • http://library.thinkquest.org/CR0210120/wheel%20and%20axle.html • Text book page 124 Back to TOC

14. Refrences • Picture is from http://myword.info/images/screw_1a.jpge is from • Text book page 121 • http://teacher.scholastic.com/dirtrep/simple/screw.htm Back to TOC

15. Incline Plane • A flat surface with different size endpoints. • Examples: -Wedges -Ramp -Airplane wings -Plows -hatchets Back to TOC

16. Incline Plane (cont.) • The force is normally directed away from the object (in picture) • Used to raise and object. • Less effort is needed to raise the object when you are using an Inclined Plane. Back to TOC

17. pulleys • Like most machines, pulleys help make work easier. • They are easy to make and can be used from different distances • They are used to help people pull heavy objects easily. Example: A person building a building uses the pulley to bring up bricks and metal, and other things to help make the job easier. Back to TOC

18. Pulleys (cont.) • It is also called a sheave or block. • It is made up of one or more pulleys, some rope and cable. More examples: -sewing machines -Flag poles -Water pumps -engines -water pumps Back to TOC Table of Contents

19. Compound Machine • Makes work easier. • Helps people do their jobs better. • A compound machine is two simple machines put together to make more easier. http://www.youtube.com/watch?v=Hu2GW5lsu4c Back to TOC