I have this player with some portal based technology that wanted to build a moving base. His technology works like this: You need 2 portals connecting two spaces, both go in both ways, and conserve momentum. Furthermore, if you were to stick your arm through one of them, and then moved the other one through the air, your arm would follow without you putting any effort.
Knowing this, he then built a couple of portal-rings. Erected a big pillar somewhere in his state, and put one of the portals at its base. Put the other somewhere, and built a whole dome that hung from the pillar. Since he only needed enough energy to move the portal-ring and those ignore most physical issues, he said he could move this whole dome at his will. At first I said no… The idea was cool and all, but I thought there would be friction to overcome and it would strain the main pillar too much. So he could move it… but very slowly. So… he slowly moved it out to space and said that there would be no problem then. And… I conceded. It was a game and it was a great idea.
In our game we assumed that since the dome was connected to earth through the pillar and portals, there was earth’s gravity in it, and since he could move the portal at will and the dome would just follow – being no resistance at all in space – he could move it at his top speed at the moment.
How would gravity function in the dome? Would we have a relatively vertical force of gravity like are we are used to? Or would gravity point towards the portal?
Would the absence of friction really eliminate all strain on the pillar? Somehow I think that pulling all that mass can’t be free.
What improvements could be made to the formula to avoid these or other problems?