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Geo 230 First exam
Beginning of class - oct. 5
Question | Answer |
---|---|
Pressure (p) | limited to media with no or very low shear resistance (fluids) |
Stress (sigma) | used when dealing with media with a minimum of shear resistance (rocks) |
Shear resistance | the resistance that a medium has to parallel but opposite forces sliding against it |
Body Forces | A force that affects the entire volume of a rock, the outside as well as the inside. example: gravity, magnetic forces |
Surface force | a type of force that acts on surfaces only. When one body pushes or pulls another body, the force acting across the contact area is a surface force. |
Traction | Stress on a surface |
Normal stress |