A straight, smooth tunnel is dug through a uniform
Chapter , Problem 79(choose chapter or problem)
A straight, smooth tunnel is dug through a uniform spherical planet of mass density The tunnel passes through the center of the planet and is perpendicular to the planets axis of rotation, which is fixed in space. The planet rotates with a constant angular speed so objects in the tunnel have no apparent weight. Find the required angular speed of the planet
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer