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Gravity Potential Gradient
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The model allows you to explore the relationship between "g" field and gradient of potential. The model can be adapted to do the same job for the case of charges and E field. That’s why the slide controls show the possibility of negative masses!
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In the first instance the mass m2, green in the animation, is set to zero. The circle controls allow us to draw concentric contours around mass m1, blue in the window above. Use the "V tool" red dot and output meter to measure the gravitational potential on each contour selected. Then calculate the potential gradient. Grab the g field tool, purple gt on screen, and position it so as to get the total g field between the two contours created. Compare the values.
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Repeat the process so as to explore the g field around mass 1.
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A second mass can then be introduced by assigning a value to m2. The effect of this on the potential gradient at a given position can be explored; before doing this write down a qualitative answer. Then use the edit copy window function to help you justify or correct your initial answer.
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Download this Resource
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Package:
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Gravity.exe (86Kb)
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Contents:
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Gravity.mdl, Gravity.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 gravity.mdl.
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