Help
Search
Members
Calendar Plane on a conveyor revisited |
Welcome Guest ( Log In | Register ) · 0 New Messages
| james |
 Jan 31 2008, 08:22 AM
Post
#1
|
  Group: Super Administrators Posts: 3296 Joined: 2-March 01 From: Surrey, UK Member No.: 13  |
Dragging up the past a bit - TV show Mythbusters ran it's much anticipated episode with a practical experiment version of this question on it a couple of nights ago over in the US.
I don't know when it will come on over here but for the curious Kottke liveblogged it and also links to another good explanation from a guy with a Sc.D. in Nuclear Science and Engineering (whatever that is). And for the hard of attention and understanding - yes of course it takes off.  -------------------- "We are number one, all others are number two or lower!" - The Sphinx, Mystery Men
"A computer without a Microsoft operating system is like a dog without bricks tied to its head" - annon "What a terrible thing to have lost one's mind. Or not to have a mind at all. How true that is." - Dan Quayle |
   |
 
|
  |
Replies
| camsmith |
Mar 3 2008, 10:24 PM
Post
#2
|
  Group: [RP PB] Posts: 653 Joined: 15-September 03 Member No.: 178 |
Jamie, I think you are forgetting one simple thing. Where does the thrust for a plane come from? The engines. What do the engines act on? The air (not the ground). Therefore there IS this outside force, as it is the air around the plane. The arm/rope is replaced by an engine (jet or propeller, doesn't matter) acting on the air around the plane. The air speed has nothing to do with the ground speed.
-------------------- May you live as long as you want to...
... and want to as long as you live!  |
|
|
|
Posts in this topic
James Plane on a conveyor revisited Jan 31 2008, 08:22 AM
camsmith You could just have used his graphic... :devil: :... Jan 31 2008, 10:39 AM jamie I just want to publicly state at this point
I st... Feb 22 2008, 10:19 AM Jeffers Brando, Brando, Brando......
If you strapped a ro... Feb 25 2008, 10:20 AM
paul If you strapped a rocket to my arse when I was ru... Feb 25 2008, 10:53 AM James
Reading that lit up a bulb for me - I never consi... Feb 27 2008, 08:48 AM jamie no, I can see how you are thinking.. Its just if t... Feb 29 2008, 03:16 PM Jeffers Your wrong
no, I can see how you are thinking.. ... Feb 29 2008, 05:23 PM paul no, I can see how you are thinking.. Its just if ... Feb 29 2008, 09:08 PM James Ok - as long as you didn't think we meant it s... Mar 1 2008, 10:46 AM jamie that only makes sense if the plane were suspended ... Mar 2 2008, 12:09 PM Emily It took my a while to get this but there was one e... Mar 2 2008, 04:12 PM jamie dont get me wrong, that makes sense. But there is ... Mar 2 2008, 06:15 PM Emily the engine is pulling the plane through the air - ... Mar 2 2008, 10:22 PM Jeffers Emily is correct.
:tongue:
the engine is pull... Mar 3 2008, 12:24 PM jamie Its not that I dont understand what you are saying... Mar 3 2008, 02:31 PM James Imagine you are holding a matchbox car (the kind w... Mar 3 2008, 03:16 PM Egg Designer
Imagine you are holding a matchbox car (the kind ... Mar 3 2008, 03:25 PM jamie Exactly! Couldnt find a way of phrasing it.
... Mar 3 2008, 06:40 PM Emily I think this has got to the point where without se... Mar 3 2008, 09:33 PM jamie if the plane was floating i would agree.
There i... Mar 4 2008, 05:34 PM camsmith If you want to take that line, then there is a sim... Mar 5 2008, 04:35 AM jamie Ok, lets revisit the rope scenario
In a relevant ... Mar 5 2008, 05:59 PM Jeffers Your wrong
Accept it and move on with your life.
... Mar 6 2008, 05:50 PM Emily I sorry I can't wait - Jamie you've missed... Mar 6 2008, 08:08 PM paul Did anyone see the Motor racing? Mar 7 2008, 06:08 PM jamie With or without the wheels the result would be the... Mar 8 2008, 03:05 PM Egg Designer The rope theory is not relevant in this argument a... Mar 12 2008, 12:11 PM Jeffers The plane will only take off if there is airflow o... Mar 13 2008, 10:20 AM jamie
Your wrong
Accept it and move on with your life.... Mar 13 2008, 01:13 PM Jeffers Thats impossible.
Your wrong
Accept it and mov... Mar 14 2008, 04:25 PM Egg Designer OK, does that mean we are all in agreement now the... Mar 13 2008, 03:06 PM Emily :mad: Your all Ghaaayyy! and wrong! :ha... Mar 16 2008, 11:36 AM Jeffers
:mad: Your all Ghaaayyy! and wrong! :h... Mar 17 2008, 08:51 AM |
49 User(s) are reading this topic (49 Guests and 0 Anonymous Users)
0 Members:
|
Time is now: 19th January 2025 - 03:28 PM |
Invision Power Board
v2.1.7 © 2025 IPS, Inc.
Content © ringerpatrol.net 2001-2007 -- Design by Designified
