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PAGES 6,7,8 AND 9, image, image, image, image, image, image, image, image,…

- - - - Columns of a bridge
    - - Traffic of a bridge
- - - - Traction
        
        Produced when forces try to stretch the body they act on
        
        Opposite forces, same direction but different trayectories
        
        Rubber band
      - Bending
        
        Produced when forces try to bend a body
        
        Not opposite forces in the same trayectory but on different ways
      - Compression
        
        Produced when forces try to crush or compress
        
        Opposite forces, same trayecotry
        
        Legs of a table
      - Torsion
        
        A force try to twist a body
        
        Forces go on different directions
        
        Sharpen a pencil
      - Shearing or cutting
        
        We use this forces to try to divide something
        
        Forces act near each other but not opposing, one goes up and other goes down
        
        When we cut a sheet of metal
- - - - Shell of a crab
      - Caves
    - - Legs of a table
      - Case of a camera