- #1
freeelectron
- 10
- 1
- TL;DR Summary
- Force of gravity based on distance from celestial body.
I read everywhere that gravity is slightly stronger at the bottom of a mountain than at the top because the place is closer to the celestial body that causes the "attraction".
What I don't understand is that, as you get closer to the center of the planet, there's less matter below you and, therefore, gravity should decrease, because less matter attracts you from below.
I also guess that, at the center of the planet, you shouldn't feel any gravity in any direction.
Now, imagine you are in an elevator that starts from a high altitude (see attached image) and goes down through the Earth's crust down to the center of the planet, is there an height where gravity switches from getting stronger and stronger to getting weaker and weaker? If yes, can we calculate how high?
Thanks
What I don't understand is that, as you get closer to the center of the planet, there's less matter below you and, therefore, gravity should decrease, because less matter attracts you from below.
I also guess that, at the center of the planet, you shouldn't feel any gravity in any direction.
Now, imagine you are in an elevator that starts from a high altitude (see attached image) and goes down through the Earth's crust down to the center of the planet, is there an height where gravity switches from getting stronger and stronger to getting weaker and weaker? If yes, can we calculate how high?
Thanks