How to float in the swimming pool. Physics of swimming. Part 1
How to float in the swimming pool. Physics of swimming. Part 1

Understanding the physics of swimming is a
key element to help you swim faster, it doesn’t matter if you are a beginner or an experience
swimmer. On this video we will go over buoyancy (meaning
the ability to float) . 1- how do you float? To understand why something or someone float
you need to understand Archimedes principle. Let me try to explain it on simple terms and
then if you want a more scientific explanation I will leave a link in the description for
you. When you are in the water you push some of
it to the sides and then up. Just like when you get in a hot tub you displace
the water and the level raises. However, in a swimming pool gravity is going
to pull that water that you lifted up, back down. So, that water pushes you back up with the
same amount of force that you pushed it. This equilibrium of forces makes you float. 2- how can some people seem to float more
easily than others? This all depends on the density of the body. Essentially density refers to how close the
atoms in an object are from each other. The more dense an object is the closer the
atoms are and the less it floats. for example, a rock is very dense meaning that it has a
lot of weight compare to its mass. Muscle is more dense than fat. So a fit person with very little fat in their
body floats less than a baby that has very little muscle and light bones. A person with more body fat will also float
more. 3- Why is this important? When you are swimming you have a center of
buoyancy and you always have a center of mass. Your center of mass is very close to your
belly button. but your center of buoyancy is close to your
lungs. That is because the air in your lungs is not
dense at all and it floats more. So if you stand straight and still these two
centers will align with gravity. That is also why if you blow all the air in
your lungs, you sink to the bottom of the pool. For optimal swimming you need a horizontal
position. 4- How do you float in a horizontal position? By changing your center of buoyancy, keeping
a good amount of air in your lungs, and by kicking! If you have your arms up, the center of buoyancy
gets closer to you belly button and by kicking you create an upward force that makes the
water push you up. But that is going to be explained by the laws
of Newton in the next part of this series of videos explaining the physics of swimming. So stay tuned by subscribing. Phlex swimming is going to launch a crowdfunding
campaign and it is honestly a very cool product. I have no doubt that this product will help
you improve your swim training. That is why I reached out to them. They are offering you, our followers, the
option of getting their product at the lowest cost through a secret link. All you have to do is subscribe to their email
list and they will let you know when the campaign goes live so you can pledge and support their
project and get one of these. how do you define success See you next time! Thanks for watching! Swim fast!

23 thoughts on “How to float in the swimming pool. Physics of swimming. Part 1”

  1. Homunkoloss says:

    I found this video very well made. You obviously put some effort in the animation & the explanations were very easy to understand.
    I knew the things you explained before, but you did well 🙂

  2. Blake Friya says:

    Thanks guys for responding to my suggestion and making a video on floating

  3. nouria alaoui says:

    Très pédagogique ! Ça prouve votre passion pour l'eau, merci beaucoup

  4. Michael Cello says:

    Does this explains why I can’t get my body and arms out of the water enough to avoid drag on the power phase of the butterfly stroke? Is it because I have too much muscle?

  5. tyshaun Hamilton says:

    Hello guys, I have a question on how does having ur arms stretched out above ur head change your center of buoyancy?

  6. Amanda Parker says:

    This is so helpful!

  7. Lee李이Sang相상 Hwa和화 says:

    수영장에서 뜨는 방법. 수영의 물리학. 1 부
    How to float in the swimming pool. Physics of swimming. Part 1

    수영에 적용되는 물리학을 이해하는 것은 더 빠르게 헤엄치는 것을 돕는 중요한 요소입니다. 초보자이건 경험 많은 수영인이건 상관없이. 이번 비디오에서 우리는 뜨는 능력을 뜻하는 부력을 살펴보겠습니다.

    1- 어떻게 뜨나요?
    2- 왜 어떤 사람들은 다른 사람들보다 더 쉽게 뜨는 것처럼 보이게 되나요?
    3- 이게 왜 중요한가요?
    4- 어떻게 하면 수평으로 뜰까요?
    허파에 적당한 양의 공기를 유지하여 부력 중심을 옮기고, 그리고 차기를 통해서!
    양팔을 머리 위로 들면, 부력 중심은 배꼽 쪽으로 가까워집니다.
    그리고 차기로, 물이 몸체를 들어 올리게 하는 윗 방향 힘을 만듭니다.
    하지만 이 부분은 수영의 물리학을 설명하는 이 비디오 연재의 다음 부분에서 뉴튼의 물리 법칙으로 설명드리겠습니다.

    5- 멋진 크라우드 펀딩 캠페인!
    플렉스 스윔(Phlex swim) 크라우드 펀딩 캠페인 비밀 링크:

    출처: (그리고 보다 과학적인 설명)

    Skills NT 가게:

    우리 email 목록에 가입해주세요:

    우리가 좋아하는 아마존 제품들:

    우리의 페이트리언이 되어주세요:



    시청해주셔서 감사합니다!
    빠르게 헤엄치세요!

  8. Skills NT Swimming says:

    Thanks to Sang Hwa Lee for this correction in the script
    “Thx for good video, friends.
    I found some misconception.
    00:01:20,844 –> 00:01:27,706
    For example, a rock is very dense, meaning that it has a lot of weight compare to its mass.
    compared to its "volume"… rather than "mass".

    Equation on the screen is Density = Mass/Volume…
    I think you meant weight = "Mass".
    So, the script should read as "For example, a rock is very dense, meaning that it has a lot of weight compare to its volume."

  9. TheRelaxinH2o _ says:

    Do a video on how to sink please because I have a problem with that. Thanks😀

  10. Lala Zy says:

    Ya tenía conocimiento de varios datos que se mencionan, pero no tan bien explicados. Me encantó! 👏 👏👏

  11. Taim Moor says:

    Hey brother, Can u please do a video on nutrition for swimmers and weather dryland workout should be done before or after swim?

  12. Peachy Vibezzz says:

    Thanks now I could go in the deep end with my 6 cousins playing and talking

  13. Ajitesh Singh Thakur says:

    I believe extending the arms moves the center of gravity up towards the lungs and not the other way round.

  14. Insideron says:

    Followed the steps cxlrrectly, thanks for making me almost drown. No hate, it just doesn't work for me.

  15. Rasheed Ahmed says:

    Sir: A Question raised in my mind from many year but not suitable/understandable answer i found from internet the question is is hot water more dense or cold if cold water more dense then what it mean is cold water easy to swim maybe density help in floating?

  16. Pr1n0 says:


  17. Sivaram Karanam says:

    For the love of God…talk louder and clearly

  18. Tragoudistros.MPH says:

    I mentally retitled this video "Why you don't float, using physics" . It's more fitting, in my case

  19. 박태홍 says:


  20. TheFastly says:

    2:04 R.I.P Nose

  21. Wungmaling Makang says:

    You are talking yourself or teaching others… You talking like you are talking your self so boring worst video

  22. Diane Benzler says:

    I taught myself to float in a swimming pool many years ago. I use to go in the pool and just spend a lot of time floating!

  23. Jah Alvarez says:

    Science and physics together

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