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Oscillating disk UDF..someone please help..

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Old   July 21, 2009, 06:36
Default Oscillating disk UDF..someone please help..
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Ashish karn
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Please can someone help me write the udf for define CG_motion for the flat disk oscillating under water.
I am not quite conversant with writing UDFs and I need it urgently please. Here is the displacement and velocity of the disk Y=asin(wt) Vy=awcos(wt) w=2*PI*Frequency
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