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By Jacob Simple Machines and Force Work is how much energy it takes to move something. Simple Machines help us do work. The following are the simple machines: wedge, screw, lever, Lever—Levers help lift loads. The place where the lever sits is called a fulcum. Changes in the fulcrum affect how much the lever can lift. Some common levers: Hammer, seesaw, bottle openers, crow bars Inclined Plane—An inclined plane is a flat surface in which one end is higher than the other. An inclined plane makes it easier to move things. Some common inclined planes: ramps Wheel and Axle— Some common wheel and axles: Cars, Roller Skates, Wagons, Door Knobs , Gears in Watches, Clocks, and Bicycles
A screw is Jar Lids Light Bulbs Stools Clamps Jacks Wrenches Key Rings Spiral Staircase To learn more about simple machines and work, visit these sites: http://edheads.org/activities/simple-machines/ http://home.earthlink.net/~kandyhig/sm/
http://www.coe.uh.edu/archive/science/science_lessons/scienceles1/lever.htm
By Kortney
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