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Yes. But, using an inverse truss, a form of cable truss and a tensegrity, described in Patent # US8474760B2, eliminates central trusses, significantly reducing weight. Mockups and the patent can be see at http://ffc.futurehistory.us/


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No they will not cancel each other as both of them act on two different bodies.


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It isn't necessary to introduce the effective potential in orbital mechanics but it is really useful. Let's say we have a particle moving in a central gravitational potential. Newton's laws give you a vector equation of motion \begin{equation} m \ddot{\vec{x}} = - \nabla U \end{equation} where $U = - G M m /r$. In a general coordinate system this is a ...


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i only know the effective potential when talking about central forces situations in classical mechanics, there it is defined as: $V'(r) = V(r) + \frac{L^2}{2mr^2}$ with V(r) being the radial potential, the second term can be considered a centrifugal potential which results from considering the azimuthal part of the kinetic energy. $E = V + E_{kinetic} = ...


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If I understand your question correctly, they do experience a different centrifugal force. They both travel along the equator, with equal but opposite speed with respect to the surface of the earth. But the Earth frame itself is a rotating reference frame. So you could look at the problem in non-rotating frame, where one of the objects has a speed ...



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