Physics of flip turn. Physics of swimming part 5

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  • Published on Nov 9, 2018
  • For the physics of the flip turn this is all you need to know. L = rmr
    This video consists of three parts; the first one will explain this equation, the second one will explain the best flip turn technique and the third one what you can do to improve your flip turn.
    What you need to know for L or angular momentum is that is stays the same throughout the spin. So when I rotate on my chair I have a certain velocity let’s say 2 km/h , that is V. A mass that is 75 kilograms and a distance of the mass in my extremities to the axis of rotation, lets say 100 cm. That means that the angular momentum is 15,000. That number will not change. So what happens if I change the distance of my extremities by making it smaller say 30 cm? Since this number must not change, the mass hasn’t change either, the velocity increases! to 3.33333333333 km/h. That’s how ice skaters can do this…
    But what does that have to do with the flip turn? Well when you are swimming you have linear momentum but when you do a flip turn you transform that into angular momentum and this equation applies! The tighter you make the flip turn the faster you will turn! Just look at these examples.
    In order to improve your flip turn then you must make your body into a small ball and for that you will need certain mobility to get into this position. Maybe you don’t have the mobility to be in this position, So try doing this for 30 seconds several days a week for a month and you will see improvements. If you want to practice the speed of your flip turn try holding to a wall and flutter kicking. When you are ready do a fast flip turn focusing on being tight, small and fast!
    Another important aspect of the turn is the third law of newton.
    Basically you need to convert that angular momentum into linear momentum again by pushing the wall. The wall will push you with the same amount of force that you push it. So make sure to not slow down coming into the turn because you will use that force to push yourself the other way, and make sure you use those leg muscles to push off the wall strongly!
    If water gets in your nose when you do a flip turn or if you want to learn the basics of a flipt urn, watch the videos on this playlist.
    Watching videos alone will not improve your swimming, you need hours of deliberate practice. If you want to practice but you don’t have a coach or you need workouts, we have a new workout for you every time you want to go swimming! This will help you be regular with your swimming practices and will keep you motivated. We offer three levels of difficulty the easiest being around 1,200 meters or yards each practice, then the moderate with around 2,400 and the hard around 3,500. If you are interested find out more at
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Comments • 42

  • robohippy
    robohippy Month ago

    You, or some one, really needs to do a video on flip turns with the camera on your head. Most of us never get to see ourselves on camera, but we know, and have seen, what it looks like as we approach the wall and flip. See the wall, tuck your head so you see your knees, see the ceiling or side of the pool as you fire off the wall. Interesting that now most, well except for back stroke, we come off the wall with maybe 45 to 90 degrees rotation rather than flat on our backs.

  • awanti tiwari
    awanti tiwari 4 months ago

    no u

  • Joe Vlogs
    Joe Vlogs 10 months ago +1

    I learnt swimming by watching your videos and now the coach of swimming team on our school wants me to join the team 😊 THANK YOU SO MUCH

  • Lee李이Sang相상 Hwa和화

    굽혀 돌기의 물리학. 수영의 물리학 5 부

    굽혀 돌기(flip turn, 플립 턴)에 관해서라면 이 공식만 이해하시면 됩니다. L = rmv.
    이번 비디오는 세 부분으로 나뉩니다; 첫 번째 부분에서는 이 공식을 설명하겠습니다, 두 번째 부분에서는 가장 좋은 굽혀 돌기(flip turn, 플립 턴) 기술을 설명하겠습니다 그리고 세 번째 부분에서는 굽혀 돌기(flip turn, 플립 턴)를 향상하기 위해 할 수 있는 것들을 보여드리겠습니다.
    L 즉 각운동량에 대하여 알아야 할 것은 각운동량은 도는 내내 똑같은 양을 유지한다는 것입니다. 제가 의자에 앉아 회전할 때는 특정한 속도로 돌 것입니다. 가령 2 km/h라고 합시다, 이 값이 V입니다. 무게(m)는 75kg입니다. 그리고 무게가 있는 가장 먼 곳에서 회전축까지의 거리(r=radius, 회전 반경)는, 100cm라고 가정하겠습니다. 이때의 각운동량을 계산하면 15,000이 됩니다. 이 값은 변하지 않습니다. 그렇다면 제가 팔을 내려 무게가 있는 가장 먼 곳까지의 거리를 바꾼다면 무슨 일이 일어날까요? 가량 30cm로 바꾼다면? 각운동량은 변하지 않아야 하므로, 그리고 무게 또한 변하지 않았으므로, 속도가 빨라집니다! 3.33333333333 km/h로. 그래서 피겨스케이팅 선수들은 이렇게 할 수 있습니다…

    하지만 이것이 굽혀 돌기(flip turn, 플립 턴)와 무슨 관련이 있냐고요? 글쎄요. 여러분이 헤엄칠 때는 선운동량(linear momentum)이 있게 됩니다. 굽혀 돌 때 여러분은 이 선운동량을 각운동량(angular momentum)으로 전환하게 됩니다. 이때 이 공식이 적용됩니다! 더 꽉 조일 수록 더 빨리 돌게 됩니다! 꽉 안 조인(Not tight) 그리고 꽉 조인(Tight), 이 두 가지 예를 확인하십시오.

    그러므로 여러분이 굽혀 돌기(flip turn, 플립 턴)를 향상하려면 자신의 몸을 작은 공 모양으로 만들어야만 합니다. 그리고 그렇게 하려면 이 자세를 취하기 위한 특정 가동성이 필요하게 될 것입니다. 아마도 여러분은 가동성이 부족해서 이 자세를 취하지 못할 수도 있습니다. 그렇다면 이 운동을 30초씩 해보십시오, 일주일에 며칠씩 한 달 동안 그러고 나면 가동성이 개선됨을 확인하게 될 것입니다. 굽혀 돌기(flip turn, 플립 턴) 속도를 연습하고 싶다면 벽을 붙잡고 팔랑 차기를 해보세요. 그리고 준비되었을 때 빠르게 굽혀 도세요 꽉 조임, 작음 그리고 빠름에 집중하면서!

    벽 되돌기(turn, 턴)에서 중요한 또 하나의 측면은 뉴턴의 운동법칙 중 제3법칙입니다.
    근본적으로 여러분은 벽을 밀어 각운동량을 선운동량으로 바꾸어야 합니다. 벽은 당신이 가한 것과 똑같은 양의 힘으로 당신을 밀어내게 될 것입니다. 그러니 벽을 향해 들어갈 때 반드시 느려지지 않게 하십시오. 왜냐하면 자신을 반대 방향으로 미는 데 그 힘을 이용하게 되니까요. 그리고 반드시 다리 근육들을 이용해서 벽을 강하게 밀고 나오십시오!

    굽혀 돌 때 코로 물이 넘어온다거나 굽혀 돌기(flip turn, 플립 턴)의 기초를 배우고 싶다면, 이 재생 목록에 있는 비디오들을 보십시오.
    비디오를 보는 것 만으로는 헤엄 실력을 개선하지 못할 것이므로, 몇 시간 동안 충실하게 연습해야 합니다. 연습하고 싶지만 배울 코치가 없거나 또는 훈련 세트가 필요하다면, 우리는 여러분이 헤엄치러 갈 때마다 가져가실 수 있도록 새로운 훈련 세트를 제공할 수 있습니다! 이를 통해 여러분은 보다 규칙적으로 연습할 수 있게 되고 수영에 대한 의욕을 계속 유지하게 될 것입니다. 우리는 세 단계 난이도의 훈련 세트를 제공합니다. 가장 쉬운 훈련 세트는 각각 대략 1,200 미터 또는 야드입니다. 중간 난이도 훈련 세트는 대략 2,400m.
    그리고 어려운 훈련 세트는 약 3,500m입니다.
    구미가 당겨 더 자세한 것을 알고 싶다면 아래 링크를 방문하십시오

    skillswimming.com/swimming-workouts
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    빠르게 헤엄치세요!

  • francesca musñgi
    francesca musñgi 11 months ago

    Of all the swimming videos I found here in RU-clip, your channel is the most credible especially when it is grounded with science. :) Thank you!

  • sheriff shetaia
    sheriff shetaia 11 months ago +1

    Is that workout program daily or three times a week ?

  • Valentina
    Valentina 11 months ago +1

    Distance is not measured in cm in physics!

    • Lee李이Sang相상 Hwa和화
      Lee李이Sang相상 Hwa和화 11 months ago +1

      @Valentina
      The creator of this video showed the unit is centi-meter instead of meter.
      That's clear!
      Some community can use "yards" instead of "meters".
      Some community can use "척" instead of "meters".
      Some community can use "cm" instead of "meters".
      Why don't you accept the nature as it be ?
      Any problem?

    • Lee李이Sang相상 Hwa和화
      Lee李이Sang相상 Hwa和화 11 months ago

      @Valentina What I'm saying is... it's not important for swimmers.
      I would recommend you...
      before you read any calculation results,
      first ask the calculator which units the calculator is used.
      I also know the terrible Rocket Explosion case.
      So, before you apply any calculation results,
      knowing which unit used
      is very important.

    • Valentina
      Valentina 11 months ago

      Lee李이Sang相상 Hwa和화 I guess you are deciding to stay ignorant. That’s ok, not my problem! Lol

    • Lee李이Sang相상 Hwa和화
      Lee李이Sang相상 Hwa和화 11 months ago

      @Valentina
      We're not using the calculation result to share with others....
      If you're working as an engineer for building rocket or something, and share the calculation with your co-workers.... in such a case... you should follow the standard.
      But, the example in this video is not such a case.
      Right?

    • Valentina
      Valentina 11 months ago

      Lee李이Sang相상 Hwa和화 of course it matters, it changes the entire result!!! 🤦🏻‍♀️

  • REDandBLUEandORANGE
    REDandBLUEandORANGE 11 months ago +1

    My friend be like
    “I am distance swimmer so I must swim 8k consecutively”

  • REDandBLUEandORANGE
    REDandBLUEandORANGE 11 months ago

    This is nice

  • primo dayo
    primo dayo 11 months ago +1

    hey bro!Im already sixteen and have been swimming for six years now. i think i haven't been improving since 3 years ago because my times havent been going down. is there still a chance for me to be an olympian?or should i stop now? I've subscribe to yourchannel because its really helpfull :)

    • Skills NT Swimming
      Skills NT Swimming  11 months ago

      Nicholas Santos just broke a world record at 38. You have a long way to go if you truly love the sport.

  • Ezio Greggio
    Ezio Greggio 11 months ago +2

    I can't find a way to thank you
    Your vids are simply too good, you cover every single part of swimming and every time you make more times a same video, you add more informations, the quality gets better.
    In this video you explained how to make the perfect flipturn: how should it be (part 2) why the perfect flipturn should look like that (part 1) and how to reach it (part 3)
    Thanks a lot also for listening me, I've asked for louder audio track and you fulfilled it
    And it's all free
    Soon I will probably buy some merchandise or donate something

  • Neranjan Jayasinghe
    Neranjan Jayasinghe 11 months ago

    plz reply me

  • Ultra Games
    Ultra Games 11 months ago

    BTW It is called a Tumble turn

    I have been swimming for 5+ years.

    • Paris Wolf
      Paris Wolf 5 months ago

      In Britain it is a tumble turn. In the US it is called a flip turn.

  • Neranjan Jayasinghe
    Neranjan Jayasinghe 11 months ago

    Hi.i am a little swimmer.i am 14 years old.i wact your all videos.there are very helpfull to improve my swimming practices.so i like to be a great swimmer like u or michel philps.one day i do it.i like to join with u .so plz give me your instergrame or facebook name.and i want to get many ideas for my practise shedul.plz give me your account name

  • Christopher b
    Christopher b 11 months ago +2

    I will show your video with my Physics students!

  • Anmol Mahajan
    Anmol Mahajan 11 months ago

    Great job dude😍

  • Ray Nguyen
    Ray Nguyen 11 months ago

    SWIM SEASON STARTS Monday for me! Expect a significant increase in views from me 😂

  • David Kaufman
    David Kaufman 11 months ago +1

    Great video as usual!

  • علي المحمد
    علي المحمد 11 months ago +3

    you are the best .... "swim fast guy"

  • Fernando
    Fernando 11 months ago +2

    Great video! The 'physics of swimming' videos are my favorite videos you guys do :)
    Keep up the good work!
    Regards from Vejle, Denmark

  • Carles Ferrer
    Carles Ferrer 11 months ago +1

    I think this is the best video I've ever seen on flip turns. So well explained and the slow-motion video parts are very illustrative and helpful. I think I know now what I need to focus on to improve. Thanks!!!

  • ron7006
    ron7006 11 months ago +4

    Thanks 4 the most informative flip turn video on youtube.
    I found out I'm doing most everything wrong, even though it's fun for me. I glide in strongly from the flags, then flip my whole body straight over like a flapping fish, but luckily I usually get a good push off the wall.

  • Jake Hunter
    Jake Hunter 11 months ago +1

    Digging the science swim vids. Thanks #jakehunter88

  • Chien Nghiem
    Chien Nghiem 11 months ago

    #swimfast 😂😂😂

  • The Worst Gamer
    The Worst Gamer 11 months ago +3

    Lol 0:05

  • Iroshy Perez
    Iroshy Perez 11 months ago

    Y en español, lo subiras??

    • Skills NT Swimming
      Skills NT Swimming  11 months ago

      Si pero los estamos traduciendo en orden. Faltan como unos 50 antes de este 🙂

  • SherifEgypt
    SherifEgypt 11 months ago +8

    😂😆😍 That intro.
    Nice & informative useful video, thanks.

  • Rayyan Sheikh
    Rayyan Sheikh 11 months ago +1

    hii