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HAMMER REMOVES NAIL: 1ST CLASS LEVER <br />
When an effort force (in this case arm muscle) is applied to a lever (the handle of the hammer) the lever moves about the fulcrum (the top of the hammer) and overcomes a resistance force (pressure of the wood against the nail).

Fphoto-30159110A-2RM.jpg

HAMMER REMOVES NAIL: 1ST CLASS LEVER
When an effort force (in this case arm muscle) is applied to a lever (the handle of the hammer) the lever moves about the fulcrum (the top of the hammer) and overcomes a resistance force (pressure of the wood against the nail).

Copyright:© 1991 Richard Megna - Fundamental Photographs

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Richard Megna