1.structures

1.structures

1. All phisical bodies or objets have a structure.Its propuse to mantain the objet's shape and don't break when a force acts on therm.Sometimes the structure is easly identified in the body or objet, like the bones of vertebrates...For other objets the structure aren't esasy to distinguish because the whole objet forms the structure.

   • Natural and man-made structures
     • Natural structures
       • Aren't made by man.They are living begins,in their composition, or a result of s geological process.
     • Man-made structures
       • are made by pepole to satisfy a need

2. Forces and loads

   • a force is anithi we can deform a body or make it move or stop

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