What is the Farthest any one has ever gone underground?
Any human to be specific :)
plz answer
Best Answer
Dan S answered 7 years ago
The Russians have gone over 4.8 miles down.
The project was first proposed in 1962 and was assigned to the Interdepartmental Scientific Council for the Study of the Earth’s Interior and Superdeep Drill. The Russians stopped drilling when it got too hot 180 °C (356 °F), but they expect to continue to a final depth of 1,500 meters with an expected temperature at 300 °C (572 °F).
The deepest any human being has gone down is 3,774 meters (1.48 miles) in South Africa.
According to Wikipedia: http://en.wikipedia.org/wiki/Mining#Reco...
“The deepest mine in the world: Savuka Mine in the North West Province, South Africa at 3,774 meters.
The deepest borehole in the world: Kola Superdeep Borehole at 12,262 meters (4.8157 miles). This, however, is not a matter of mining but rather related to scientific drilling.”
According to Wikipedia: http://en.wikipedia.org/wiki/Kola_Superd...
“The Kola Superdeep Borehole (KSDB) was the result of a scientific drilling project of the former USSR. The project attempted to drill as deep as possible into the Earth’s crust. Drilling began on May 24, 1970 on the Kola Peninsula, using an “Uralmash-4E” and later an “Uralmash-15000” drilling device. A number of boreholes were drilled by branching from a central hole. The deepest, SG-3, was completed in 1989, creating a hole 12,262 metres (7.6 mi) deep, the deepest hole ever made by humans...
It was decided to drill again from 7,000 metres (22,970 ft)[3]. The hole reached 12,262 metres (40,230 ft) deep in 1989. In that year the hole depth was expected to reach 13,500 metres (44,290 ft) by the end of 1990 and 15,000 metres (49,210 ft) by 1993. However, due to higher than expected temperatures at this depth and location, 180 °C (356 °F) instead of expected 100 °C (212 °F), drilling deeper was deemed infeasible and the drilling was stopped in 1992. With the expected further increase in temperature with increasing depth, drilling to 15,000 metres (49,210 ft) would have meant working at a projected 300 °C (572 °F), at which the drill bit would no longer work.”
You wouldn't make it all the way because about two kilometers down you would burn to a crisp and I know this because Al Gore told me "the interior of the earth is extremely hot, several million degrees..."
The closer you get to the center the less you weigh.
At the center there is weightlessness...this is because the mass of the earth is equal in all directions. You are pulled up as much as down, to one side as much as the other..weightless.
A 150 lb man standing on the surface weighs almost the same regardless of where on the surface he stands (bit less at equator) This is because he has the entire mass of Earth beneath him. But if he is at the center of the earth the mass is roughly equal in all directions...so he weighs
0 lb.
As you fall in, the maximum speed you can attain is limited by friction caused by atmosphere....this effect becomes greater as you approach the center because of your declining weight and makes you move slower and slower. Remember that objects of differing mass fall at the same speed only in a vacuum. Air pressure is zero at the center because the air molecules are at zero g....but the friction of air against the body is still present.
Objects always weigh most at the surface of a planet. At any location inside the planet objects weigh less. It would be a very small difference but if you could measure it a man would weigh less in a coal mine than he would standing on the ground. Of course this is due to the weak pull of gravity from the mass of the earth that was above him when he is deep in the mine....
I enjoyed this.