High Velocities Through Portals: Escape Velocity Achieved

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EDIT: Problem solved, the object would approach escape velocity (11km/s).
I'm sorry this was a bad question.
 
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I think you should not confuse video games with what can be done in reality. It just seems like a waste of time.
 
Video games are not real.
 
GR's wormholes act more like the video game portals than one might think In particular, one can't use a single-valued potential function to describe them , in general one needs a mulit-valued potential function.
 
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From $$0 = \delta(g^{\alpha\mu}g_{\mu\nu}) = g^{\alpha\mu} \delta g_{\mu\nu} + g_{\mu\nu} \delta g^{\alpha\mu}$$ we have $$g^{\alpha\mu} \delta g_{\mu\nu} = -g_{\mu\nu} \delta g^{\alpha\mu} \,\, . $$ Multiply both sides by ##g_{\alpha\beta}## to get $$\delta g_{\beta\nu} = -g_{\alpha\beta} g_{\mu\nu} \delta g^{\alpha\mu} \qquad(*)$$ (This is Dirac's eq. (26.9) in "GTR".) On the other hand, the variation ##\delta g^{\alpha\mu} = \bar{g}^{\alpha\mu} - g^{\alpha\mu}## should be a tensor...
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