• Almacca@aussie.zoneEnglish
    52·
    23 hours ago

    I’m choosing to believe it’s the parents causing the lock-up in that image.

  • CocaineShrimp@sh.itjust.works
    782·
    1 day ago
    For those that don't get it

    The way the gears are arranged will result in a grid lock - you won’t be able to turn any of them.

    Rotating one clock-wise (CW) will rotate another counter-clock-wise (CCW), and the 3rd gear will spin CW. Because the first and 3rd gear are close enough to be in contact, and they’re both rotating CW, they are opposing each other resulting in them being locked

    Ie. none of this will work

    • ramble81@lemmy.zip
      15·
      24 hours ago

      Yup on a 2 dimensional surface or if all three share a plane it’ll never work. Only way would be if one was extruded and the other two weren’t touching.

        • Cethin@lemmy.zipEnglish
          1·
          14 hours ago

          I don’t know if there’s anything specific to read. It’s a basic mechanic of gears. They turn connected gears in the opposite direction. If the gear you’re spinning is attached to two other gears, they’ll both want to spin opposite the first gear, and the same as each other. If they’re both connected they’ll try to make each other spin opposite themselves too, which obviously can’t happen.

          • Fluffy Kitty Cat@slrpnk.netEnglish
            1·
            22 hours ago

            Well I mean yeah friction but I’m sure there’s a mathematic model of how gear systems work and you can mathematically prove that this doesn’t work, and other interesting facts about gears and two or three or more dimensions

    • captainlezbian@lemmy.world
      9·
      23 hours ago

      Any wat in which 1 and 3 are not in contact with each other. Lines work. 2 being double thickness and 1 and 3 having depth separation works.

      Gears are really simple and absolutely something more people should understand

          • Bytemeister@lemmy.worldEnglish
            2·
            16 hours ago

            I wish I was an engineer, but I have read a few mechanical engineering books with chapters on gears, and it really is a bottomless pit.

            In the example, I recall seeing a method a ways back where 3 interlaced gears could rotate simultaneously. Two are linked traditionally, while one is a helical gear that slides though the teeth of the other two. It had a slick animation, wish I could find it.

      • Hylactor@sopuli.xyz
        1·
        17 hours ago

        Nothing is more simple than American’s, I’m afraid. We’ve been losing a war on education for around 70 years now.

    • cm0002@lemmy.worldOP
      7·
      24 hours ago

      Making the 2 smaller ones not touch each other or one of the small ones not touching with the big one would do it

    • ewigkaiwelo@lemmy.world
      2·
      24 hours ago

      I can’t find that picture (it was anothet textbook cover probably) but imagine the students gear as a long cylindrical gear, and the two other as shorter gears, so when you move say the parents gear it would move the students gear and that in turn will move the teachers gear and it would look fine from the side but looks impossible from the front