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Define Mechanical Advantage |
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The ratio of output force to input force. |
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Mechanical Advantage Equation |
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MA=L(e)/L(r) Mechanical Advantage=length of the effort arm/length of resistance arm |
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1st Class Lever |
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RFE-Resistance, Fulcrum, EffortExample: Atlanto-Occipital Joint of Neck |
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2nd Class Lever |
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FRE-Fulcrum, Resistance, EffortExample: Mandible |
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3rd Class Lever |
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REF-Resistance, Effort, FulcrumExample: The forearm, when you flex your arm |
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