4 ms·

Not if the black hole carved a spherical cave there. The forces in all directions cancel each other out inside the spherical cave.

• merraksh 16y ago
  In the perfectly spherical earth hypothesis, being the center of mass in the black hole, wouldn't there be a resulting force towards the center, although very small? [EDIT] Hmm I think I see the point. The resulting force would be proportional to the ratio (black hole mass / earth's mass). Very small indeed.
  • vecter 16y ago
    No, that's irrelevant: http://hyperphysics.phy-astr.gsu.edu/hbase/mechanics/sphshell2.html http://hyperphysics.phy-astr.gsu.edu/hbase/mechanics/sphshel...
    • ars 16y ago
      That's for a hollow shell. For a solid sphere, there is always force toward the center. (And the closer to the center the lower the force, reaching 0 in the middle.)
  • jules 16y ago
    No, the force is EXACTLY zero, not just very small.
    • ars 16y ago
      Inside the cave yes, but not when it's inside the solid mass of the earth. Inside a solid sphere the force is toward the center.
      • jules 16y ago
        Yes, but we're talking about the situation where there is a cave?