That plane/conveyor problem - filmed solution
Discussion
orgasmicliving!! said:
buzz word said:
i see what you are saying but if it were a skate on a treadmill with perfect bearings in a steady state it would stay still. if you accelerated the treadmill under the skate this is the driving force and any inertia of the wheel is irrelevant as it is not the driving force on the wheel. the mill speads up and assuming perfect grip efficiency the wheel rotates at the same speed. the only reason the skate will move is in the real world when there is friction i the bearings.
un-Amen. Spinning up the skateboard wheels in this way will cause a force acting to accelerate the skateboard. Purely due to the angular momentum of the wheels, this is a different effect than bearing friction.
KB_S1 said:
Tris.E said:
GingerNinja said:
For those who still can't see that the plane will take off, someone's made a film to prove the point that it would......
http://videos.streetfire.net/player.a
Apologies if this was shown before.
THE PLANE WILL STAY ON THE GROUNG WHY CANT YOU SEE THAT IT WILL??????????????
Errr because it has been proven time and again that it will take off.
If you had bothered to read my response to your question about 35 pages back you would realise this.
Either you are on a wind up or you really shoul have a think about this.
Put a skateboard on a slope of say 30 degrees. let it go from the top and measure its max velocity on the slope.
Put it on a treadmill with a slope of 30 degrees and set the treadmill to that max velocity (belt travelling up slope). Put the skateboard at the top of the slope and let go.
What happens next?
ATG said:
swilly said:
You think so? so the flywheel in a car, there to store energy, is actually hindering the cars movement??
Yes of course it does when the car is accelerating. This is easy to see. Let's say you do a Le Mans start 0-60 run. The flywheel starts with no rotational kinetic energy. By the time the car is doing 60 the flywheel has kinetic energy. Where did that kinetic energy come from? The engine. The engine has a fixed amount of power. By having to do work against the flywheel, the 0-60 time of the car has been reduced.orgasmicliving!! said:
Brink said:
Tris.E said:
GingerNinja said:
For those who still can't see that the plane will take off, someone's made a film to prove the point that it would......
http://videos.streetfire.net/player.a
Apologies if this was shown before.
THE PLANE WILL STAY ON THE GROUNG WHY CANT YOU SEE THAT IT WILL??????????????
Ok, Ginge, how do hellicopters take off then? Does the pilot have to spin a wheel next to his seat? What about the Shuttle? Does that have a secret wheel somewhere that winds up to a galaxic speed to make ordit?
As I said eariler, Boo!lux.
Helicopters do need to spin their "wings" which are the rotor blades. They can't take off without spinning their rotors. Honest.
ok.. so.. will a helicopter take off if it's on a hydraulic lift that decends at the same speed at which a helicopter can climb?
sputnik said:
You did actually, at 11:35, albeit in reply to esselte. 
I largely agree with what you have been saying for the last 40 odd pages.
I was only asking if you could explain how to match the rotational velocity of the wheel to the linear velocity of the conveyor. You may have more luck than I did. It's just like trying to match length and area. Impossible. The units don't match.
If you are successful, maybe then OL and his ilk will understand as well.
Dear Spluttering nik, I hope that, despite your urine being at such an elevated temperature, you are now able to comprehend this simple little fact...that all points on and in a circle, at any given instance, do have a linear velocity as well as an angular velocity. I largely agree with what you have been saying for the last 40 odd pages.
I was only asking if you could explain how to match the rotational velocity of the wheel to the linear velocity of the conveyor. You may have more luck than I did. It's just like trying to match length and area. Impossible. The units don't match.
If you are successful, maybe then OL and his ilk will understand as well.
Next year, when you have mastered basic hygiene and restored your teeth to a colour resembling the background of this page, we will cover how to look up and down a road and judge when it's safe to cross.
Oh, and
munky said:
orgasmicliving!! said:
Brink said:
Tris.E said:
GingerNinja said:
For those who still can't see that the plane will take off, someone's made a film to prove the point that it would......
http://videos.streetfire.net/player.a
Apologies if this was shown before.
THE PLANE WILL STAY ON THE GROUNG WHY CANT YOU SEE THAT IT WILL??????????????
Ok, Ginge, how do hellicopters take off then? Does the pilot have to spin a wheel next to his seat? What about the Shuttle? Does that have a secret wheel somewhere that winds up to a galaxic speed to make ordit?
As I said eariler, Boo!lux.
Helicopters do need to spin their "wings" which are the rotor blades. They can't take off without spinning their rotors. Honest.
ok.. so.. will a helicopter take off if it's on a hydraulic lift that decends at the same speed at which a helicopter can climb?
Of course
munky said:
What's a groung?
I'd think that the ability to spell would be a prerequisite to discussing physics.
You think wrong (but we knew that). I'd think that the ability to spell would be a prerequisite to discussing physics.
Ability to understand physics is all that's required.
Isn't it bloody obvious that he meant ground? What kind of insecurity makes people go off on a tangent and pounce on such insignificant details and quibble over typos and spelling errors...?
trackdemon said:
munky said:
orgasmicliving!! said:
Brink said:
Tris.E said:
GingerNinja said:
For those who still can't see that the plane will take off, someone's made a film to prove the point that it would......
http://videos.streetfire.net/player.a
Apologies if this was shown before.
THE PLANE WILL STAY ON THE GROUNG WHY CANT YOU SEE THAT IT WILL??????????????
Ok, Ginge, how do hellicopters take off then? Does the pilot have to spin a wheel next to his seat? What about the Shuttle? Does that have a secret wheel somewhere that winds up to a galaxic speed to make ordit?
As I said eariler, Boo!lux.
Helicopters do need to spin their "wings" which are the rotor blades. They can't take off without spinning their rotors. Honest.
ok.. so.. will a helicopter take off if it's on a hydraulic lift that decends at the same speed at which a helicopter can climb?
Of course
orgasmicliving!! said:
Dear Spluttering nik, I hope that, despite your urine being at such an elevated temperature, you are now able to comprehend this simple little fact...that all points on and in a circle, at any given instance, do have a linear velocity as well as an angular velocity.
Next year, when you have mastered basic hygiene and restored your teeth to a colour resembling the background of this page, we will cover how to look up and down a road and judge when it's safe to cross.
Oh, and
Next year, when you have mastered basic hygiene and restored your teeth to a colour resembling the background of this page, we will cover how to look up and down a road and judge when it's safe to cross.
Oh, and
orgasmicliving!! said:
munky said:
What's a groung?
I'd think that the ability to spell would be a prerequisite to discussing physics.
You think wrong (but we knew that). I'd think that the ability to spell would be a prerequisite to discussing physics.
Ability to understand physics is all that's required.
Isn't it bloody obvious that he meant ground? What kind of insecurity makes people go off on a tangent and pounce on such insignificant details and quibble over typos and spelling errors...?
Don't know...you tell us....
mackie1 said:
Most of the personal insults seem to be coming from OL at this point...
yup, i go to sleep and people make caustic comments all night long (my time). i come back and respond to each one, and people like you start keeping score. i even quoted the insults that i was responding to, but don't let that get in the way of your little "assumption". amazing how you can take 3 things and end up with...3 things!
Edited by orgasmicliving!! on Thursday 14th December 15:28
mackie1 said:
Are orgasmicliving and mini_ralf even arguing the same point? I've lost track!
I think we still are but I haven't been paying close attention to the thread over the last 24 hours. Last time I really looked Orgasmicliving and I were both of the opinion that the plane couldn't take off given the question orginally raised.
mini_ralf said:
mackie1 said:
Are orgasmicliving and mini_ralf even arguing the same point? I've lost track!
I think we still are but I haven't been paying close attention to the thread over the last 24 hours. Last time I really looked Orgasmicliving and I were both of the opinion that the plane couldn't take off given the question orginally raised.
Would you care to state that question?
mackie1 said:
sputnik didn't insult you in the post you replied to though. Let's keep it on topic shall we?
he did. there's some background there that you are not aware of. you'd need to have access to the sin bin and to my email exchange with him and references to a couple of other threads...suffice it to say you don't have the whole picture.Gassing Station | The Pie & Piston Archive | Top of Page | What's New | My Stuff