Recent content by gogetagritz

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    Help! Egg Launcher Project for High Schooler

    Oh that's a good idea, i can just take potential to kenetic energy to momentum. I was planning on putting weights on it to see how big the nonlinear terms of the elastic constants are, but this will kill two birds with one stone. I suppose I could have just done a numerical integration from...
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    Help! Egg Launcher Project for High Schooler

    Not sure if this is the right place to post this, but will give it a shot. I am helping out my little sis this weekend as she has an egg launcher project for high school. There are weight and dimension limitations of course, and I'm not quite clear on other rules (when I took this class ~8...
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    How to record a signal outside of a physics lab?

    Yes, after spending some more time looking up pin diagrams, I realized the serial port is a digital port, requiring an analog to digital converter chip, and thus a bread board and vcc. I could scrounge those from some physics lab at school I'm sure, but wanted to keep this as simple as...
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    How to record a signal outside of a physics lab?

    I am trying to set up an experiement to measure period doubling in a leaky tap. My plan was to just have a speaker input to a computer (through the com port I assume) to register drips into some container. My web searchs for how to wire the two wires from a speaker to any port on the...
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    How Can We Determine Convergence of A^n * b in Linear Algebra?

    I am pretty rusty/unknowledgable when it comes to linear algebra, so when I was given the problem. Find the limit as n->infinity of A^n * b where a is a 2x2 matrix and b is a 2x1 vector, I scratched my head. A fellow student told me about the spectral radius being the largest eigen...
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    MATLAB Plotting Bifurcation Diagrams in MATLAB: Finer Point Options

    I'm making some bifurcation diagrams for school and was wondering if there is any way to get a finer point than just saying plot(a,b,'.') ? Mine get the point across, but would look better if they were finer. -thnx
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    Question about moment of inertia

    I have seen moment of inertia equations which give scalar and second order tensor solutions. When is it appropriate to use either equations, and is the scalar equation of just the integral over a volume of R^2 dm just the same thing as I(1,1) when solving the matrix equation toa=I * alpha?
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