Earth's Center and Gravity ```Name: Ian Garioch Status: Student Age: 10 Location: N/A Country: N/A Date: N/A ``` Question: What is gravity like at the centre of the earth? If I dug a hole through the earth and travelled to the centre would I be pulled in both directions or float or what? Replies: Yes, you would be pulled equally in all directions, in essence in "zero gravity". But the temperatures in the center of the earth would melt all known materials, you'd need some special insulating field to protect you there. Getting there would be another issue, another question. This is all a "what-if" journey, right? Lou Harnisch You would oscillate between the center of the earth and each end very much like a yo-yo. Harold Myron At the center of the earth, you would not feel any gravity. This is because the gravitational pull from every region of the earth is exactly counteracted by the gravitational pull from the corresponding region on the opposite side of you. This all adds up to a great bug zero. Of course, you would perish in molten lava long before you reached the center of the earth, but that's a different matter. Richard Barrans You would be pulled in all directions at the same time, which really means you would be floating. Floating means that whereever you are, you would stay, just, well, floating. Since you are getting pulled in all directions at once, you don't move in any one direction at all, you stay put. This all assumes that the earth around you is a perfect ball, a perfect sphere. If it is not, then you might slowly move off in one direction or another. Dr. S. Ross Hello If you managed to get to the centre of the earth (and please note that travelling to the centre of the earth is not recommended for health reasons - it is so hot that you would catch fire and be compressed by the enormous pressure) you would be pulled equally in all directions at once...but you would experience it as being weightless. When I tell you that you would be pulled in all directions at once you probably think of your arm being pulled one direction and your legs in another and you head being pulled in entirely different direction. This would not happen. Instead every tiny bit of your body would be pulled equally in all directions at once and the forces would cancel each other out. You would feel weightless because you cannot sense that there are these competing forces which are cancelling each other. In conclusion, if you go to the centre of the earth you will catch fire, get squashed and will get space sickness because of the unusual sensation af weightlessness. Bye Cameron Millsom Click here to return to the Environmental Science

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