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

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

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

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

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

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

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

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

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.

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

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

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

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

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

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

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

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

Back to TOC Table of Contents 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

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