Long rod question
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Soldato
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If you think about the hypothetical situation presented in the plane problem, it doesn't actually make sense physically.
If the conveyor belt were to be configured to match the plane's forward velocity in the opposite direction, then if the plane were to start from a standstill (and taking the incorrect supposition that the plane won't take off), then the conveyor belt won't even move. If the plane's not moving, then neither will the conveyor belt, thus leading to a contradiction, as there'll be nothing to prevent the plane from taking off
If the conveyor belt were to be configured to match the plane's forward velocity in the opposite direction, then if the plane were to start from a standstill (and taking the incorrect supposition that the plane won't take off), then the conveyor belt won't even move. If the plane's not moving, then neither will the conveyor belt, thus leading to a contradiction, as there'll be nothing to prevent the plane from taking off
Depends how powerful the fans are.
If they were blowing faster than the engines could displace air, then the plane would (probably) blow backwards until far enough away from the fans to take off.
Edit: This is assuming the same as Le_Petit_Lapin below and you're not going to let it go into the air and fall back down again.
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Soldato
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Yes, if you attach it via some sort of vertical bar that lets it rise up and down, but not tip over.
Wouldn't be much use as a plane though, if you intended to fly home in it after your fun experiment.
Well I'll define a sandwich as "two (or more) slices of bread with a filling between them." By that definition, half a sandwich is also a sandwich.
So both answers are correct
No, a sandwich cut in half is half a sandwich. You said so yourself.
You see, i think that's a stupid question to answer as there's no "law" governing a sandwich. A sandwich made with one slice of bread cut in half, then sandwiched over fillings is a sandwich so from that theory you could take two "halves" of a sandwich to be a two sandwiches if you so choose to use that interpretation. Similarly, a club sandwich, commonly made with three slices of bread, by the normal interpretation of a sandwich would be actually one and a half sandwiches. But it's not.
Haha, if you make a sandwich with two different fillings in each half and cut it in half does that make it two sandwiches? What actually defines a sandwich?
Soldato
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Of course. But it's also a sandwich. Like I said
Is there any law saying it can't be both?Would you argue that a stone found on a beach is in fact not a stone because it was once part of a larger stone?
Ever heard of a wind-tunnel?
Soldato
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oh dear - this has to be about the thickest thread (other than the nose picking one) that has surfaced here in ages.
1. How quickly does the other end of a 10 mile rod move if the other end is pulled? The same as the end your pulling. You've effectively eliminated physics from the question by stating that it has no elasticity so you move one end, then the other one moves at the same time at the same velocity.
2. A plane on a conveyor belt??? How moronic can you get - a planes ability to fly is not based on its relitivity to the ground but the relativity to the air. If a plane is standing still and there is no air over the wings it will NOT fly no matter how fast a 'conveyor belt' is moving. A plane flys because of air passing over and under its wings specifically due to a differential between the air over the top of the airfoil vs the bottom.
1. How quickly does the other end of a 10 mile rod move if the other end is pulled? The same as the end your pulling. You've effectively eliminated physics from the question by stating that it has no elasticity so you move one end, then the other one moves at the same time at the same velocity.
2. A plane on a conveyor belt??? How moronic can you get - a planes ability to fly is not based on its relitivity to the ground but the relativity to the air. If a plane is standing still and there is no air over the wings it will NOT fly no matter how fast a 'conveyor belt' is moving. A plane flys because of air passing over and under its wings specifically due to a differential between the air over the top of the airfoil vs the bottom.
so are you saying the plane will take off or that it wont take off ?
you hav just stated some facts but then not made your answer clear , like many others in here
Soldato
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NOOOOOOOOOO it won't a plane on a treadmill is going nowhere and least of all up! How is this not obvious?
i cant believe you just called this the thickest thread ever then have got it wrong
we will take this in easy steps
tell my why a treadmill will stop the plane going forwards through the air?
Soldato
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