useless Posted June 25, 2014 Share Posted June 25, 2014 How would you manage to fall out the other side? Link to comment Share on other sites More sharing options...
limpid Posted June 25, 2014 Administrator Share Posted June 25, 2014 When I was a tad younger I always wondered what would happen if you drilled straight through earth, obviously it will never happen but I heard an interesting stat on the radio today. If you dug an hole straight through the middle of earth and jumped down it, it would take you just over 48 mins to come out the otherside. So in reality were only 48mins away from the people on the otherside of the world. The earth diameter is 7,918 miles (12742 km) You'd have to fall roughly 10 times faster than sound to make that distance in 1 hour. (or am I missing something here) acceleration I'm not going to do the maths. Levi? 1 Link to comment Share on other sites More sharing options...
Rugeley Villa Posted June 25, 2014 Share Posted June 25, 2014 I aint got a clue mate, I'm just going off some radio 2 presenter who was giving out facts. I imagine you would pick up a hell of a lot of speed by free falling but I don't know how accurate that information is. Maybe he's wrong. Link to comment Share on other sites More sharing options...
villaajax Posted June 25, 2014 Share Posted June 25, 2014 When I was a tad younger I always wondered what would happen if you drilled straight through earth, obviously it will never happen but I heard an interesting stat on the radio today. If you dug an hole straight through the middle of earth and jumped down it, it would take you just over 48 mins to come out the otherside. So in reality were only 48mins away from the people on the otherside of the world. The earth diameter is 7,918 miles (12742 km) You'd have to fall roughly 10 times faster than sound to make that distance in 1 hour. (or am I missing something here) acceleration I'm not going to do the maths. Levi? I think we are all awaiting Levi's post. Link to comment Share on other sites More sharing options...
useless Posted June 25, 2014 Share Posted June 25, 2014 At a certain point because of gravity wouldn't you need to float rather than fall? Confusing for me to think about. When you arrive out the other side you wouldn't drop out you'd need to sort of fly out. Link to comment Share on other sites More sharing options...
villaajax Posted June 25, 2014 Share Posted June 25, 2014 At a certain point because of gravity wouldn't you need to float rather than fall? Confusing for me to think about. When you arrive out the other side you wouldn't drop out you'd need to sort of fly out. At one point wouldn't gravity start pushing you back? You'd be stuck in the centre of the earth bouncing back and forth. 2 Link to comment Share on other sites More sharing options...
limpid Posted June 25, 2014 Administrator Share Posted June 25, 2014 At a certain point because of gravity wouldn't you need to float rather than fall? Confusing for me to think about. When you arrive out the other side you wouldn't drop out you'd need to sort of fly out. No, you will accelerate due to gravity all the way to the centre at which point you will start to decelerate due to the same gravity. The rate of acceleration will decrease based on the amount of Earth's mass "behind" you. You will have zero acceleration at the centre of the Earth, but a heck of a lot of speed. I was going to work out the maximum speed, because I suspect that the heat from air resistance would incinerate you, probably before the heat of the core did. 2 Link to comment Share on other sites More sharing options...
limpid Posted June 25, 2014 Administrator Share Posted June 25, 2014 One virtual beer to anyone who spots my dumb mistake in that post. Link to comment Share on other sites More sharing options...
Tegis Posted June 25, 2014 VT Supporter Share Posted June 25, 2014 (edited) Acceleration would require it to be a vacuum right? As opposed to the air when jumping from a plane? (Physics was never my strong point ) edit: no virtual beer answer, just the general falling bit discussed Edited June 25, 2014 by Tegis Link to comment Share on other sites More sharing options...
troon_villan Posted June 25, 2014 Share Posted June 25, 2014 Define dumb. Link to comment Share on other sites More sharing options...
limpid Posted June 25, 2014 Administrator Share Posted June 25, 2014 When there is air, you reach terminal velocity and stop accelerating. Therefore the DJ was wrong. Air resistance would stop it being true. I suspect that figure was based on a frictionless object. I mentioned air resistance and also forgot about terminal velocity, so I was dumb. Link to comment Share on other sites More sharing options...
useless Posted June 25, 2014 Share Posted June 25, 2014 I haven't read it and won't understand the equations i don't think, but here's a write up about the subject. Although many cartoons suggest that if you dig a deep hole straight down through the Earth, you will end up in China. The truth is that starting a hole in North America will take you to the Indian Ocean. In order to emerge in China, you would need to start digging in Argentina. Link to comment Share on other sites More sharing options...
Rugeley Villa Posted June 25, 2014 Share Posted June 25, 2014 Yeah I imagine he was just on about if other factors wernt involved that's how long it would take, or would it?. Link to comment Share on other sites More sharing options...
tonyh29 Posted June 25, 2014 Share Posted June 25, 2014 When I was a tad younger I always wondered what would happen if you drilled straight through earth, obviously it will never happen but I heard an interesting stat on the radio today. If you dug an hole straight through the middle of earth and jumped down it, it would take you just over 48 mins to come out the otherside. So in reality were only 48mins away from the people on the otherside of the world. Total recall 2012 says hello 1 Link to comment Share on other sites More sharing options...
tonyh29 Posted June 25, 2014 Share Posted June 25, 2014 (edited) One virtual beer to anyone who spots my dumb mistake in that post. You didn't finish the post with DHUTWU ? Edited June 25, 2014 by tonyh29 Link to comment Share on other sites More sharing options...
Wainy316 Posted June 25, 2014 Share Posted June 25, 2014 What is more satisfying? Finishing inside a lovely female or getting a like on VT? Link to comment Share on other sites More sharing options...
Baselayers Posted June 25, 2014 Share Posted June 25, 2014 Link to comment Share on other sites More sharing options...
Ginko Posted June 25, 2014 Share Posted June 25, 2014 (edited) Depends on the female and depends on the poster giving the 'Like' Oh I just saw you did specify a lovely lady. Edited June 25, 2014 by Ginko Link to comment Share on other sites More sharing options...
CarewsEyebrowDesigner Posted June 25, 2014 Share Posted June 25, 2014 Neither compares to the satisfaction of filing documents. Link to comment Share on other sites More sharing options...
8pints Posted June 25, 2014 Share Posted June 25, 2014 What is more satisfying? Finishing inside a lovely female or getting a like on VT? I'm not sure but I make the same face for both. 4 Link to comment Share on other sites More sharing options...
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