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Atomic Forces
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The animation shows three curves. The axes are proportional to interatomic force (vertical) and separation (horizontal) between two interacting particles. Various features of the force law are adjustable for investigation. Look in the initial conditions window as shown.
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- Identify the repulsive, attractive and total force curves.
- Once you have the total force curve adjust the attractive force law. There is a constant factor and a power index. Use the edit/copy window function to generate some graphs that you can use to help you explain the effect your changes to the model are having on the overall shape of the interatomic interaction.
- Use the total interaction graph to indicate which features are related to (a) maximum breaking stress and (b) Hooke’s law k value for the material.
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Download this Resource
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Package:
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Forces.exe (110Kb)
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Contents:
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forces.mdl, forces.doc
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Instructions:
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Download the self extracting ZIP archive. Locate the file using Windows Explorer and double click. The self extractor will then start. The default installation path is C:\AP Revision. Having set the path press the Unzip button. After the files have been extracted change directory to C:\AP Revision. To start the model double click on forces.mdl.
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