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# Problems Inputting equation

Posted 11 years ago
 So I am trying to double check some work that I did, basically it involves solving a frequency property relationhip for stiffness here is the Base equation F(natural frequency)= (a/2Pi)sqrt((EIg/WL^4)) where a is a constant w is weight/unit legnth L is the legnth, E is the stiffness (youngs mod) I is the moment of inertia and g is acceleration due to gravity in in/sec^2the problem is, when I input that equation into Wolfram alpha it gets "confused by E and I" obviously, so I substituted them for other varibles, the real problem comes with that third varible is the numerator under the sqaure root. after that it comes back with "Using closest Wolfram|Alpha interpretation: F=(a/2Pi)" it had no problem understanding F=(a/2Pi) before. Any ideas ?
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Posted 11 years ago
 I assume I am misunderstanding something about what you are asking forhttp://www.wolframalpha.com/input/?i=solve+F+%3D%3D+%28a%2F2Pi%29sqrt%28E+j+g%2FW+L%5E4%29+for+E
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