Uniform Circular Motion: Future Space Stations Will Create an Artificial

Multiple Choice

Uniform circular motion: Future space stations will create an artificial gravity by rotating. Consider a cylindrical space station 390 m diameter rotating about its central axis. Astronauts walk on the inside surface of the space station. What rotation period will provide "normal" gravity?

A) 28 s
B) 40 s
C) 6.3 s
D) 4.4 s