Linked Questions

6
votes
4answers
2k views

If you could ride an elevator through the earth [duplicate]

What if it was possible to ride an elevator straight through earth. If we take all the heat and pressure problems away, and assume it would be possible: What would happen with gravity? Would gravity ...
2
votes
2answers
1k views

What happens to gravity in the middle of the earth? [duplicate]

So I was curious about, what if we make a tunnel from one side of the earth, to the other side of the earth? Gravity is ofcourse always negative, which makes you "fall" and not "float". If we take ...
2
votes
1answer
811 views

Dig a hole to the other side of the Earth [duplicate]

Possible Duplicate: If it was possible to dig a hole that went from one side of the earth to the other… This question may not be suitable here and it could be closed in seconds but I wanna ...
2
votes
3answers
372 views

Gravity and bottomless pits [duplicate]

Assuming that someone is theoretically able to make a hole through the center of a large planet, and then jumps down the hole, what will happen? Given my understanding of gravity and energy, my ...
0
votes
1answer
145 views

Making a tunnel in the Earth through its center [duplicate]

If I make a tunnel in the earth through its center from one place to the antipode place and throw a ball into the hole, what will happen? So far I can think, the ball will oscillate with SHM motion ...
0
votes
1answer
233 views

Does gravity act in the centre of the Earth? [duplicate]

If we we dig a hole from north pole to the south pole of the Earth and we throw a ball in this hole where would it stop? Will it come back on the surface or it will stop at the centre?
2
votes
0answers
164 views

How much time would it take for a free-falling ghost-like object to cross the entire Earth? [duplicate]

We have an object of mass $m$ which can go through matter like a ghost. It's only affected by gravity, not by any other force, so it's in free fall. At the instant $t=0$ it is at the surface of the ...
0
votes
1answer
86 views

Earth's graviational pull at the centre [duplicate]

Suppose, I somehow happen to dig a hole diametrically through the Earth (neglecting all constraints like molten core etc ) ... and I throw an object from one side of the hole, will it reach the other ...
-2
votes
1answer
63 views

Based on gravity a question [duplicate]

If a tunnel is dug by some people along the diameter of earth and then a ball is thrown through it starting from North Pole to South Pole whether it A) stops at center ...
0
votes
2answers
69 views

Expected behavior of the gravity under some experiment [duplicate]

I would like to know the expected behavior of the Gravity under the following mentioned imaginary experiment: What if we dig a well or a boar or a straight hole (say, its diameter is 100 meter) ...
0
votes
1answer
64 views

How does gravity change nearing the core in free fall? [duplicate]

The Pole to Pole Mole Hole- If there were to somehow be a cylinder going from the North to South Poles, all the way through Earth, then what would happen halfway down (The Core). If something fell ...
0
votes
1answer
49 views

Why do we have to use an integral in this scenario to figure out $v_{max}$? [duplicate]

$$\int_0^R mg\frac{r}{2}dr=\frac{m}{2}v_{max}$$ and can't write $$\frac{m}{2}v_{max}=mgR$$ don't we usually equal potential energy to kinetic energy? A stone is falling through a tunnel towards the ...
0
votes
1answer
46 views

How much time will it take for an object to fall to the center of the Earth? [duplicate]

The reason I want to know is because many years ago in Sunday school I learned a story that in probably 600 AD some sinner was swallowed up by a hole, and that he's still falling as of today. I can't ...
0
votes
1answer
70 views

Digging a hole in the moon across its diameter [duplicate]

What will occur if one digs a hole in some moon/dead-planet without an atmosphere (and without a Lava Core), such that this hole shall have a 1 meter diameter and will be so deep that shall go through ...
0
votes
0answers
30 views

What if we jump into center of the Earth? [duplicate]

What if we dug a tunnel through the center of the earth connecting the two ends (like two poles). Suppose we have these condition in our tunnel. 1:There is no heat at all. 2:The tunnel be vacuumed (...

15 30 50 per page