| | |||||||
| Register | Search | Today's Posts | Mark Forums Read |
| Physics Forum Physics Forum. Discuss and ask physics questions, kinematics and other physics problems. |
| | LinkBack | Thread Tools | Display Modes |
|
#1
| |||
| |||
| hey guys i'm a big fan of this fascinating group. i'm not sure where to find the answer to my following question ..so i'm asking for your help please. Say I manage to hover over the earth (not in space: for arguments's sake say 1 km high and I start hoevering at noon over Nazca). Now say it's 18:00, will the earth rotation cause me to end up somewhere easterly at all? and does this have any effect on airplanes travelling times? lol i know it could be a stupid question but i'd appreciate answer nevertheless. |
|
#2
| |||
| |||
| |
|
#3
| |||
| |||
| |
|
#4
| |||
| |||
| Dear rp: "rp" <[Only registered users see links. ]> wrote in message news:JS2Pe.15668$[Only registered users see links. ].blueyonder.co. uk... It depends on your method of "hovering". Describe how you would do this and we'll see how to answer your question. No, the jet stream and the method of maintaining altitude serve to negate any effects. I think you are seeking for "Coriolis" effect or something similar... David A. Smith |
|
#5
| |||
| |||
| "N:dlzc D:aol T:com (dlzc)" <N: dlzc1 D:cox T:[Only registered users see links. ]> wrote in message news:vb8Pe.124881$E95.87578@fed1read01... I would be hovering stationary in earth's atmospehere relative to a point in space directly above me. I'm not sure if it mak sense..but consider being suspended over a running treadmill: if i hover for a while, then come down, I'd be at another point on the treadmill from where i started. If a plane travels against the earth's axial rotation, it could reach it's destinatoin for the same geographical distance compared to travelling in the same direction as earth's rotation? I realy appreciate you putting up with my limited knowledge : ) thx for that. |
|
#6
| |||
| |||
| "rp" <[Only registered users see links. ]> wrote in message news:SifPe.23219$[Only registered users see links. ].blueyonder.co. uk... I believe, and it can be proven, that if a plane travelled against the earth's axis rotation it would reach it's destination quicker than if the earth didn't rotate. Likewise, if travelled in the direction of the earth's rotation, it'd reach it's destination later! |
|
#7
| |||
| |||
| Dear rp: "rp" <[Only registered users see links. ]> wrote in message news:SifPe.23219$[Only registered users see links. ].blueyonder.co. uk... OK, so you reach out and lock your "frame" to a single distant object (using magic). The Earth has a motion of about 20 km/sec with respect to the average object in the Milky Way, and 300 km/sec with respect to the average object (visible) in the Universe. So you will be in deep space in 5 seconds, a minute (if tangential to the surface), or impacted into the surface leaving a smoking crater. Planes don't "hover" in the sense you describe. Helicopters don't hover either, because the rotating airfoil simply serves to do what airplanes do, without ever having to depart the surface. We have a motion of about 1000 mph eastwards, depending on our latitude. (Sorry for the use of Imperial units.) If a rocket is launched eastwards, this represents a pretty good amount of rocket fuel that does not have to be expended. This is why most launches are done in this direction, rather than the reverse. No issues... David A. Smith |
|
#8
| |||
| |||
| |
|
#9
| |||
| |||
| "N:dlzc D:aol T:com (dlzc)" <N: dlzc1 D:cox T:[Only registered users see links. ]> wrote in message news:RBjPe.124974$E95.121800@fed1read01... thx...lol i make a confession. I'm gonna study physics at uni in Birmingham UK starting this september. I really have been reading this newsgroupfor ages and yeah you always seem to come up with the right answers all the time. i got a learn to learn. |
| Tags |
| lol , question , stupid |
| Thread Tools | |
| Display Modes | |
|
|
| | ||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| question about phenol/water saturated solution | Z.L. K | Protocols and Methods Forum | 2 | 02-11-2008 12:05 AM |
| Question about work and friction | Robert | Physics Forum | 2 | 01-04-2008 11:50 AM |
| Just a big question... | rahemanvelji@yahoo.ca | Physics Forum | 8 | 05-09-2005 08:44 PM |
| Sci.chem FAQ - Part 1 of 7 | Bruce Hamilton | Chemistry Forum | 0 | 01-15-2004 08:06 AM |