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Imagine sand being lifted from a pile on the ground into the back of a truck with a shovel.  The load is located at the end of the lever.  The effort is exerted between the load and the fulcrum.  The effort expended is greater than the load, but the load is moved a greater distance.  In other words, effort is sacrificed in order to gain distance.   Another example is the human forearm.  The elbow is the fulcrum; the hand holds a weight.  As the muscles move the forearm upward, the weight is moved a considerable distance.

 

Page Last Updated: Friday March 02, 2007           Webmaster: Larry Jones                 Pickens County School District