body levers

 

 

many of the bones in our body act as levers. the long bones of the arms and legs are the common examples.

 

joints like elbow and knee act as the fulcrum

muscles pulling on the bones provide the effort

the load is the weight of something that our bone works against

 

there are very few second class levers in the human body
most body levers function as speed multipliers rather than force multipliers

 

check out this presentation

http://www.peworld.org/student_resources/powerpoint/levers/sld011.htm

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