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Can you dig tunnels throughout the earth?
We can barely dig a tunnel just a few kilometers into the reasonable outer crust of the Earth. If you dig a tunnel between any two points on Earth, you can still take advantage of the Earth’s gravity. Instead of traveling between two antipodes, you could travel a much shorter distance, without piercing so far down.
What is gravity tunnel?
A scenario often presented to introductory physics classes is that of a “gravity tunnel” — a tube drilled from one side of the Earth to the other through the planet’s center. “Halfway through the ride, gravity would switch directions and you’d go from right-side up to upside down.
Can you fall all the way through the Earth?
What Would Happen if You Fell Through the Earth, and Other Burning Questions. Of course, falling all the way through the Earth is impossible, since its core is molten. As you approached the center of the earth the pull of gravity would decline and eventually (at the center) cease, but inertia would keep you going.
What is earth tunnel?
Earth air tunnel or earth air heat exchanger is a pre-cooling or pre-heating system which consists of a pipe or network of pipes buried at reasonable depth below the ground surface. It utilizes the fact that the deep earth temperature remains almost same as the annual average mean air temperature of the location.
How do gravity trains work?
A gravity railroad (American English) or gravity railway (British English) is a railroad on a slope that allows cars carrying minerals or passengers to coast down the slope by the force of gravity alone. The speed of the cars is controlled by a braking mechanism on one or more cars on the train.
What happens if Earth falls into space?
Our atmosphere would start to be vacuumed up. And then huge chunks of the Earth would rip apart and follow suit. If Earth managed to fall into the orbit of the black hole, we’d experience tidal heating. The strong uneven gravitational pull on the Earth would continuously deform the planet.
Is there such a thing as gravity train?
Special mention to the QI episode that kicked this off: Anyway, the host points out that a tunnel that connects a pair of points on the earth’s surface can be thought of as a gravity train – where… Stack Exchange Network
Why is the period of Earth’s gravity train equal to its orbit?
The fact that the period of the gravity train that passes through the center of the Earth is equal to the period of an orbit that skims the Earth’s surface is not a coincidence. Consider a polar orbit around Earth (i.e., one that passes directly over the coordinate north and south poles).
Are there tunnels that do not pass through the center of Earth?
A simulation of this motion; includes tunnels that do not pass through the center of the earth. Also shows a satellite with same period. The fictitious Alameda Weehawken Burrito Tunnel is a gravity train.
When is the maximum speed of a gravity train reached?
The maximum speed is reached at the middle point of the trajectory. For gravity trains between points which are not the antipodes of each other, the following hold: The shortest time tunnel through a homogeneous earth is a hypocycloid; in the special case of two antipodal points, the hypocycloid degenerates to a straight line.