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View Poll Results: Will the jet take off and achieve flight?

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  • Yes, it will take off no problem

    11 45.83%
  • No, it will sit stationary and never take off

    13 54.17%
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Thread: A Riddle

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  1. #1

    Default A Riddle

    Ok, here's a riddle for you...

    You have a 747 sitting on a huge conveyor belt. This conveyor belt is controlled by a computer that precisely matches the speed of the conveyor to the speed of the jet, only going the opposite direction. When they throttle up, will the jet be able to take off?
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  2. #2
    Member ridgewalker243's Avatar
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    Default ridle

    oops almost blew it

  3. #3
    dodgensince74
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    I said yes, but like I always say "what the heck do I know ".

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    Quote Originally Posted by Chris View Post
    Ok, here's a riddle for you...

    You have a 747 sitting on a huge conveyor belt. This conveyor belt is controlled by a computer that precisely matches the speed of the conveyor to the speed of the jet, only going the opposite direction. When they throttle up, will the jet be able to take off?
    I say No, because the lift that the plane needs is gotten by air passing over and under the wings. Without forward progress the plane will not get the air required to give it lift... then again I could be completely off
    No I'm not dead

  5. #5
    I pray for you! BUNNYMAN's Avatar
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    Default

    I refuse to answer......

    or all of the above....

    neither of the above....

    why do we park in a driveway and drive on a parkway.......
    I cut things up and split them down!

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    Quote Originally Posted by BOWMAN View Post
    I refuse to answer......

    or all of the above....

    neither of the above....

    why do we park in a driveway and drive on a parkway.......

    Drive on a parkway? I think that depends on which parkway your reffering to
    No I'm not dead

  7. #7
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    Default Nope

    Just spinning the wheels

  8. #8
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    Default No

    If they have the belt set to match the speed of the Jet the forces/speed will be equal and not allow forward motion. If the jet is moving left to right and the belt is moving right to left then the force/speed is equal. Unless I am having a brain Cramp which is possible. The wheels should not be moving. So like Dreadly said there will not be any uplift from air flow.

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  9. #9
    dodgensince74
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    Quote Originally Posted by Chris View Post
    Ok, here's a riddle for you...

    You have a 747 sitting on a huge conveyor belt. This conveyor belt is controlled by a computer that precisely matches the speed of the conveyor to the speed of the jet, only going the opposite direction. When they throttle up, will the jet be able to take off?


    if you read the riddle it says the conveyor belt is going to spin at the same speed the plane is moving, not at the speed the planes wheels are spinning. Riddles usually are in tended to throw you off. The only thing the conveyor belt is going to do is make the tires spin at twice the speed that it normaly would. The plane would continue as it would on any run way, just the tires speed would be affected, so if the plane is moving then the plane will have lift which will get it off the ground.

  10. #10
    I pray for you! BUNNYMAN's Avatar
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    you all are reading too much into this one I think.....
    I cut things up and split them down!

  11. #11
    dodgensince74
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    Quote Originally Posted by BOWMAN View Post
    you all are reading too much into this one I think.....
    isn't that what riddles are all about??

  12. #12
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    I think its going to push the conveyor so fast that it will catch on fire, then it will not work, but the plane will be close to taking off, but they used up to much of the runway, trying to keep it on the stupid conveyor, then a big gust of wind will come up and blow the plane over sideways causing a wing to hit the ground, wich causes the plane to skid out of controll sideways into the west end of the airport, wich was thankfully not in use due to construction..... Thats what i think will happen!!!!


    Then the new riddle is how long dose it take to fix the airport?

  13. #13
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    O i also voted yes it will take off, moving air makes planes fly not wheels turning, you hold a 747 wide open throtle..... uhhh it pry will move.... Thats my guess any ways... so chris, when you going to reveil the proper awnser here....... some of us might loose sleep!!!!

  14. #14
    dodgensince74
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    Quote Originally Posted by bullspotter View Post
    I think its going to push the conveyor so fast that it will catch on fire, then it will not work, but the plane will be close to taking off, but they used up to much of the runway, trying to keep it on the stupid conveyor, then a big gust of wind will come up and blow the plane over sideways causing a wing to hit the ground, wich causes the plane to skid out of controll sideways into the west end of the airport, wich was thankfully not in use due to construction..... Thats what i think will happen!!!!

    And I thought I was reading to much in to this riddle

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    Default heres my take on it

    Invision this,
    Put a toy car on a belt sander. The car is the jet, the sander is the conveyor. Holding it in place on the sander is the push of the jet engine. When a real jet takes off do the wheels turn? So are the wheels on the car. If you push the car forward on the belt the the engine would be not at the same speed as the conveyor. Therefore the jet is not making any forward progress, so lift isn't being made around the wings for it to take off.
    Well that settles this one, next question please

  16. #16
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    Default

    Quote Originally Posted by olman View Post
    Invision this,
    Put a toy car on a belt sander. The car is the jet, the sander is the conveyor. Holding it in place on the sander is the push of the jet engine. When a real jet takes off do the wheels turn? So are the wheels on the car. If you push the car forward on the belt the the engine would be not at the same speed as the conveyor. Therefore the jet is not making any forward progress, so lift isn't being made around the wings for it to take off.
    Well that settles this one, next question please
    Thats exactly what i was trying to say, but you made it make more sense...thanks man

  17. #17

    Default

    Boy did I open a can of worms or what!
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  18. #18
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    Default sooo Chris

    What do you do Chris sit back & boggle your mind with questions like this one? Heres something a little more simple & fun. Tie your shoe. Now tie it again, only make your right hand do what your left hand just did & left hand do what your right hand did. Basicly switch roles of your hands. See you've been tying your shoes the same way for years know you don't think about it you could even tie them in the dark if you had to but now you have to think about it, it's kind of like learning all over again. Most people I've tryed this on can do it but it takes time tying is all.
    Merry Christmas everyone

  19. #19
    dodgensince74
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    Quote Originally Posted by olman View Post
    Invision this,
    Put a toy car on a belt sander. The car is the jet, the sander is the conveyor. Holding it in place on the sander is the push of the jet engine. When a real jet takes off do the wheels turn? So are the wheels on the car. If you push the car forward on the belt the the engine would be not at the same speed as the conveyor. Therefore the jet is not making any forward progress, so lift isn't being made around the wings for it to take off.
    Well that settles this one, next question please


    Invision this,
    Put a toy car on a belt sander. The car is the jet, the sander is the
    converyor. Holding it in place on the sander is the push of the engine.
    When a real jet takes off do the wheels turn? So do the wheels on the car.

    But if you push the car foward once you have set it on the belt the car continues on and that is even with the belt moving faster then the speed of the car, why you ask? Because your hand is like the engines on the plane, both car and jet are being put in motion by a force that is not transmited to the tires which are setting on the belt.

    There fore the jet will continue with its foward motion even with the belt spinning at the same or faster rate then the jet is moving.

    Get your belt sander out and try it, place your kids car on it and see if you can roll it on it. You will be able to roll you car against the rotation of the belt with out have into push it any faster then if sander was turned off. The only thing that would be different with the sander off or on is the speed at which the tires turn.

    Like you said, "Well that settles this one, next question please".

  20. #20
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    Quote Originally Posted by dodgensince74 View Post
    Invision this,
    Put a toy car on a belt sander. The car is the jet, the sander is the
    converyor. Holding it in place on the sander is the push of the engine.
    When a real jet takes off do the wheels turn? So do the wheels on the car.

    But if you push the car foward once you have set it on the belt the car continues on and that is even with the belt moving faster then the speed of the car, why you ask? Because your hand is like the engines on the plane, both car and jet are being put in motion by a force that is not transmited to the tires which are setting on the belt.

    There fore the jet will continue with its foward motion even with the belt spinning at the same or faster rate then the jet is moving.

    Get your belt sander out and try it, place your kids car on it and see if you can roll it on it. You will be able to roll you car against the rotation of the belt with out have into push it any faster then if sander was turned off. The only thing that would be different with the sander off or on is the speed at which the tires turn.

    Like you said, "Well that settles this one, next question please".
    Yeah I finally got tired of thinking and looked it up... rack one up for Dodge!

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