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Open ForumsThe Open forum was created for people to discuss anything else Non-Moto related. Just about anything goes! Please remember this is a loosely moderated area. If you do not have thick skin. We suggest you stay out of here.
and that experiment does not apply because propulsion is provided by the wheels.
instead, strap a small fan to the car then try....i think you'll observe a different result.
i agree with those who said its a reading comprehension test.....which many of you have failed miserably...
i hate this thread!
And you sir have failed miserably as well in reading comprehension, here's why:
Quote:
Originally Posted by Choco
and that experiment does not apply because propulsion is provided by the wheels.
instead, strap a small fan to the car then try....i think you'll observe a different result.
You assumed that I was trying to prove that the plane will not fly. Here, read again a bit more carefully:
Quote:
Originally Posted by TTsixxer
Wow, just wow.
Here's a little experiment you can do yourself if you have an RC car and access to a treadmill:
car=airplane.
treadmill=conveyor belt (duh!)
Now with the remote control try and move the car up the belt and try to match the car's speed with the belt. If you do it perfectly, the car will stay stationary as you match the speed, this is because the car is being powered by its wheels. We all know that the wheels do not drive the aircraft down the runway. Now put the remote controller aside, you have now proven to yourself that if the vehicle is driven by its wheels, it will remain stationary because the belt will counter any forward motion.
Please take note that this is to prove that a vehicle that's powered by its wheels will not move up the belt if you match the belt speed to the vehicle's speed.
Quote:
Now let's add a turbine engine... yes I know you must be fresh out of those so let's use the next best thing; your hand.
Oh whatdoyouknow... here's your fan..
Quote:
Your hand, just like the turbine engine will power the vehicle by means other than its wheels. Now let's try do the same again:
Put the car on the treadmill and move it with your hand and try your best to match the car's speed with the belt. Tell you what, you can even cheat, set the belt to 10 mph and put the car on it and move it to your best guess of what 1mph is. You will feel some resistance from the electric motor but if you try and keep that 1 mph you will eventually run up the belt.
I rest my case. May I suggest you brush up on your reading comprehension skills?
Lol you can always tell an in-the-box thinker when this problem is presented.
It will fly.
The simple fact is that a conveyor cannot match the speed of the plane's wheels because the conveyor is not mechanically connected to the plane and the plane is thusly not affected by how fast the wheels are turning. A plane produces thrust from the engines against the air, not from the wheels. It could be on ice skates for all it cares. The conveyor could be moving at the speed of light in the opposite direction, if there was no friction and the wheels cold take it, it would still fly. As long as it can start moving forward (which it will on a conveyor because it has no resistance against it) it will fly.
Imagine riding a skateboard on a conveyor belt. Now imagine being able to pull yourself forward on a rope attached to the opposite wall. It doesnt matter how fast that conveyor is moving (it could be moving 100 mph, as long as you dont fall!) you will still be able to pull yourself forward. Because the plane is also not mechanically connected to the ground and does not press against it to move, its able to move forward because it is pulling against the air (the rope as in my example).
And you sir have failed miserably as well in reading comprehension, here's why:
You assumed that I was trying to prove that the plane will not fly. Here, read again a bit more carefully:
Please take note that this is to prove that a vehicle that's powered by its wheels will not move up the belt if you match the belt speed to the vehicle's speed.
Oh whatdoyouknow... here's your fan..
I rest my case. May I suggest you brush up on your reading comprehension skills?
and you're assuming i read past the third line in your post....
but thanks, these were warm-up problems in class....in the future, i'll be sure to waste my time on something that was proven 8 pages ago.
LIke it has been said a dozen times before.. The plane will NOT take off. The plane needs AIR to flow over the wings, and its net ground speed will be zero, so no airflow = no lift.
Why do people start trying to make it more complicated? Wheels with frictionless bearings, ect.. Dont overthink it.
Sorry, no... the plane will take off completely normally. It's a trick question.
If it was wheel driven it would not move. But it's not wheel driven. The wheels just spin, and the conveyor makes them spin much faster than normal, but the plane still moves down the runway and takes off just as it normally would.
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