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Is an External or Internal Force acting on object?Loading...
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Answers: A internal B internal C external D external E external F external G external H internalLoading...
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An example of an external force that threatens a structure is weather. Bridges are built to withstand the weight of cars/trucks, wind, rain and other natural forces. Basically, it is weight! All of these outside forces are dynamic (moving) loads. A bridge or any other structure also has to deal with static (non-moving) loads such as the materials used to build it and the load of gravity. Internal forces are constantly acting on structures. There are four internal forces that act on structures- compression, tension, shear and torsion. (watch short videos on next page if unsure)Loading...
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Use the pen to match the word to the definitionLoading...
TorsionLoading...
A force that twistsLoading...
ShearLoading...
A force that squeezes or presses something togetherLoading...
TensionLoading...
A force that stretches apart to expand or lengthenLoading...
CompressionLoading...
A force that pushes in opposite directions