this post was submitted on 03 Jun 2025
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[–] Angry_Autist@lemmy.world 1 points 4 days ago* (last edited 4 days ago) (1 children)

Halo arrays and RIngworld work because objects in frictional contact with the inner side of the boundary material are imparted linear velocity by the motion of the structure, that's not at all how it works on planets.

Even if Earth were tide locked to the sun it would still have the same exact degree of pull on other mass-having bodies. A ring array that stops spinning has occupants who experience free fall

[–] Muaddib@sopuli.xyz 1 points 3 days ago (1 children)

Here's another fun fact: A ringworld exerts zero net gravitational force on anyone inside of it. It's one of the implications of shell theorem.

[–] Angry_Autist@lemmy.world 1 points 1 day ago (1 children)

not exactly true, a sphereworld this would be thecase

Around the edges of the ring structures you would get minute tidal effects

[–] Muaddib@sopuli.xyz 1 points 1 day ago (1 children)

Not if the ring curves inward at the edges, conforming to a section of a sphere.

[–] Angry_Autist@lemmy.world 1 points 23 hours ago

Which neither the HALO arrays or Rimworld do....