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In cases where we have well defined constraints, such as a circular orbital around a single perfect spherical mass or a particle traveling on a plane in flat spacetime, we can work with virtual displacements. The method can be studied here:http://en.wikipedia.org/wiki/Virtual_displacement [Links inactive - To make links active and clickable, login or click here to register]

Quote from: jeffreyH on 12/02/2015 19:47:12In cases where we have well defined constraints, such as a circular orbital around a single perfect spherical mass or a particle traveling on a plane in flat spacetime, we can work with virtual displacements. The method can be studied here:http://en.wikipedia.org/wiki/Virtual_displacement [Links inactive - To make links active and clickable, login or click here to register]I don't understand why you're talking about virtual displacements here. The only place I know of where they're used is in analytical mechanics, i.e. Lagrangian mechanics.

In the equation x = [kQ/(Er^2) * G/(gr^2)] - [kQ/(Er^2) + G/(gr^2)] when we remove the gravitational and electric components we may be revealing the magnitude of the quark energy hidden by confinement. This should be taken as pure speculation because it is in no way validated. The equation E = mc^2 defines the energy we can detect. It is the confined energy that is hidden from immediate view mathematically. The jury hasn't even deliberated on this one.