Recent content by gth759k

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    Structural Vibrations Analysis & Simulation

    Recently I created a structural vibrations simulation and would like to hear some feedback or suggestions.
    • gth759k
    • Thread
    • Analysis Equations of motion Fea Fem Frequencies Modes Simulation Structural Vibrations
    • Replies: 1
    • Forum: General Engineering
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    Accelerating universe - details and dispute

    "accelerating" universe - details and dispute I recently sent an email to several physics professors at CalTech and MIT with a question I have about Cosmology and only one professor (Walter Lewin) replied simply saying good luck! Its not so much of a question as it is a problem. I've talked to...
    • gth759k
    • Thread
    • Accelerating Accelerating universe Universe
    • Replies: 4
    • Forum: Cosmology
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    Deriving Gravitational Constant G: Pi, r, \epsilon & k Explained

    ok, but in the equation F=G*(m1*m2)/(r^2) I know the r^2 isn't just there for no reason. Its a coulombic force so the r^2 comes from 4*pi*(r^2). There is a geometric meaning. You could easily write G as x/(4*pi*epsilon0) which is the same as x*k (where k= 1/4*pi*e0) or x*(Boltzmann constant) in...
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    Deriving Gravitational Constant G: Pi, r, \epsilon & k Explained

    I'm just trying to find how to derive the gravitational constant G. In other words what is G in terms of pi, r, \epsilon, etc. And how does it relate to k, the permittivity of free space. Like in: Any help would be appreciated. Thanks.
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