2006-09-10 17:39:39 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
It never would. With air friction it would eventually hover at the center of the Earth.
2006-09-10 17:41:25 · answer #1 · answered by managuense 1 · 0⤊ 0⤋
It would never reach the other side. Gravity doesn't pull things from North to South but towards the center of mass which would still be the center of the Earth more-or-less. If it could stay a rock for that long it would stop at the center... of course it couldn't because it would melt back into magma before it got very far at all. Not to mention that you can't have a hole going straight through the Earth in the first place it would collapse under the immense pressure and quickly refill with the near-liquid magma that surrounds our core.
2006-09-11 00:47:26 · answer #2 · answered by iMi 4 · 0⤊ 0⤋
There are various ways to calculate this, but there are a lot of assumptions you have to consider -- are you talking the real earth or an can you make assumptions such as uniform density, ideal spheres, no air resistance, and so on. If you dropped it would make it to the other side, but without a set of assumptions, I cannot calculate time.
One of the toughest parts is correcting for decreasing gravitational pull as you approach the center.
2006-09-11 00:50:18 · answer #3 · answered by novangelis 7 · 0⤊ 0⤋
It would never quite reach the other side due to air friction, but neglecting friction,
Acceleration due to gravity is ~9.8 m/s^2. The earth radius is ~6378000 m. x = 1/2 at^2. To reach the center of the earth would take:
sqrt(6378000 * 2/9.8) ~ 1141 s.
The reverse trip out the other side would be the same time, so total ~ 2282 s.
2006-09-11 00:49:42 · answer #4 · answered by lenny 7 · 0⤊ 0⤋
diameter of the earth pole to pole is about 7,900 miles. estimated terminal velocity of rock is 100 mph. so it would take about 79 hours.
assuming that it was possible to do, and ignoring many factors,
the rock would never come out of the hole at the south pole. it would come close to the end of the hole, then it would fall back. it would oscillate back and forth many trips, finally ending up at the center of the earth.
2006-09-11 00:50:42 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Two words: Check Spelling.
2006-09-12 17:06:33 · answer #6 · answered by Amphibolite 7 · 0⤊ 0⤋
It would be impossible to do, but if it were done, it would lodge in the middle of the pipe.
2006-09-11 00:42:31 · answer #7 · answered by DallasGuy 3 · 0⤊ 0⤋
It won't....it would stop at the center of the earth.
2006-09-11 00:41:58 · answer #8 · answered by Anonymous · 0⤊ 0⤋
a day
2006-09-11 00:41:26 · answer #9 · answered by fierce_guy 3 · 0⤊ 0⤋