Lever System.docx

Lever System Lever = rigid structure that turns about a pivot 4 parts to lever system:  

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Effort: the force being put into the lever system, APPLYING POWER (e.g. provided muscles) Load: the object or resistance that the effort force is acting against (e.g. weight of body parts that are moved or the force need to lift, push or pull) Fulcrum: the pivot point that the lever turns around (e.g. joints); multiple classes Lever arm: …example: bones

How to remember: FLE 123 Class I: fulcrum is located between the effort and load Other examples: Seesaw, Crowbar, Pliers Can be extremely efficient Class II: load located between the fulcrum and effort Example: Wheel barrel, standing on your tip toes Class II: effort is located between fulcrum and load Example: