simple machines. general information  simple machines are tools that make work easier.  simple...

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  • Simple Machines

  • General Information Simple machines are tools that make work easier. Simple machines have few or no moving parts. Simple machines use energy to work.Click on the link below the picture to see types of simple machinesInclined PlaneLeverPulleyScrewWedgeWheel and AxleWorks Cited

  • Inclined PlanesA flat surface which is elevated at one end. The angle formed between the ground and the flat surface cannot be ninety degrees.Inclined planes are used to move objects from lower surfaces to higher surfaces or vice versa.Examples

  • Examples of Inclined PlanesRamp StairsSlidePath up HillSlanted RoadMenu

  • LeversLevers were one of the first simple machines.They were thought of by Archimedes in 260 BC.Levers involve moving a load about a fulcrum (center point).There are three types: first class, second class, third class.Levers Continued

  • LeversFirst class levers: fulcrum is between the load and the force.Ex. See-saw, scissors, pliersSecond class levers: load is between the force and the fulcrum.Ex. Stapler, wheelbarrow, nutcrackerThird class levers: force is between the load and the fulcrum.Ex. Fishing rod, tweezers, tongsMenu

  • PulleysA pulley is used to reverse the direction of a force. When pulleys are put together and a pulley system is made, heavy objects are able to be lifted with less force. A pulley is made with a wheel that has a groove in its edge. The rope is put around the groove to move the pulley.Examples

  • Examples of PulleysFlag PoleCraneWindow BlindsWishing WellsMenu

  • ScrewA screw is a shaft or a cylinder with an inclined plane wrapped around it.In order to move a screw or an object surrounding the screw, the screw must be rotated.Examples

  • Examples of ScrewsMenu

  • Wheel and AxleA wheel and axle consists of wheels which are connected by a smaller cylinder, an axel.It takes a great deal of force to move the axel, but when the axel is moved the wheels turn a greater distance than the axel.Examples

  • Examples of a Wheel and AxleMenu

  • WedgeA wedge is used to cut objects or to get under a heavy load.A wedge is made of two inclined planes put together.A wedge acts as a right angle in a splitting motion when forced upon the object.

    Examples

  • Examples of a WedgeAxeZipper KnifeMenu

  • Works Citedhttp://library.thinkquest.org/J002079F/wedge.htm

    http://edheads.org/activities/simple-machines/sm-glossary.htm#s2

    http://www.mos.org/sln/Leonardo/InventorsToolbox.html

    http://www.mikids.com/Smachines.htm

    http://sunshine.chpc.utah.edu/javalabs/java12/machine/stdntovrvw.htm

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