One Way That Future Space Stations May Create Artificial Gravity

Multiple Choice

One way that future space stations may create artificial gravity is by rotating the station.Consider a cylindrical space station 380 m in diameter that is rotating about its longitudinal axis.Astronauts walk on the inside surface of the space station.How long will it take for each rotation of the cylinder if it is to provide "normal" gravity for the astronauts?

A) 28 s
B) 39 s
C) 6.2 s
D) 4.4 s