A science-fiction tale describes an artificial
Chapter , Problem 69(choose chapter or problem)
A science-fiction tale describes an artificial planet in theform of a band completely encircling a sun (Fig. 6-31). Theinhabitants live on the inside surface (where it is alwaysnoon). Imagine that this sun is exactly like our own, that thedistance to the band is the same as the Earth-Sun distance(to make the climate temperate), and that the ring rotatesquickly enough to produce an apparent gravity of g as onEarth. What will bethe period of revolution,this planetsyear, in Earth days?
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