Team 1 (PE-Physic) Swimm and Frictional Force by Physical Education

Tülin Taşpınar -RMAL

temafoca — 2021-06-16 21:43:53 UTC

To swim faster and more accurately with less effort, we must swim smarter, not stronger. Especially in our swimming technique, it is important to reduce the friction in the water;
1. IMPROVE YOUR BALANCE
2. EXTENDING AS POSSIBLE WHILE FLOATING
3. COMPACT AND EFFICIENT LEG FLAPPING MOTION
4. SIDE TURNING SWIMMING
5. MAKING YOUR ARMS A REFERENCE POINT
6. It is important to USE THE CENTER.

Cemre- RMAL (Tülin Taşpınar)

2021-06-19 07:54:24 UTC

What is the purpose of wearing the swimsuit and does it affect swimming speed?

Excessive friction can significantly slow swimmer performance. And generally speaking, the stiffer the swimsuit material, the more friction occurs. Famous swimwear brands produce swimsuits from low-friction materials, using high technology and inspired by the skins of sea animals to improve the way they glide on water in their swimwear designs. These materials generally provide fast drying as they do not hold water in the material and reduce weight.

Derin - RMAL ( Tülin Taşpınar )

2021-06-19 07:54:53 UTC

Swimsuits can improve their performance for a competitive swimmer or those participating in sports such as Triathlon. Excessive friction can significantly slow swimmer performance. And generally speaking, the stiffer the swimsuit material, the more friction occurs.

SILA-RMAL (TÜLİN TAŞPINAR)

2021-06-19 07:55:22 UTC

For example, swimming athletes reduce friction by wearing bonnets and slippery clothes.
Yüzme sporcularının bone ve kaygan kıyafetler giyerek sürtünmeyi azaltmaları da örnektir.

BÜŞRA RMAL-(Tülin TAŞPINAR)

beyza707 — 2021-06-19 08:04:11 UTC

En az sürtünme etkisiyle yüzebilmenin önemi çoğunlukla görmezden gelinmektedir. Oysa bu, sudaki verimliliğimizi büyük ölçüde artırabileceğimiz bir alandır. Su, havaya kısayla yoğunluğu çok daha yüksek bir ortamdır. Sudaki sürtünme etkisi, yüzme hızımızın karesiyle orantılı olarak artar. Dolayısıyla hızımızı artırmak için suya karşı uygulayabileceğimiz kuvvetin bir üst sınırı mevcuttur. Öte yandan, sürtünmeyi azaltmak kuvvetten çok beceri isteyen bir iştir. Dolayısıyla bu nokta gelişime açık bir alandır ve bu yüzden de daha hızlı yüzmek istiyorsak önceliğimiz bu alanda olmalıdır.

The importance of being able to swim with the least amount of friction is often overlooked. Yet this is an area where we can greatly increase our aquatic efficiency. Water is a medium with a much higher density than air. The friction effect in water increases in proportion to the square of our swimming speed. Therefore, there is an upper limit to the force we can apply against the water to increase our speed. On the other hand, reducing friction takes more skill than strength. Therefore, this point is an area that is open to development and therefore, if we want to swim faster, our priority should be in this area.

NEHİR H. (TÜLİN TAŞPINAR)

2021-06-19 08:07:50 UTC

NEHİR H. (TÜLİN TAŞPINAR)

2021-06-19 08:15:45 UTC

1- Gravitational force: This downward force depends on the mass of the swimmer.
2- Buoyancy of water; The water pushes the swimmer upwards, initially trying to balance the volume of the swimmer with the amount of water displaced. If the swimmer stays on the surface, the magnitude of the buoyancy force will be equal to the force of gravity.
3- Pushing force: As the name suggests, this force is the force that pushes the swimmer forward. Since it is about swimming, the swimmer's strokes and foot strokes reveal this force.
4- Friction force: Every time the swimmer is thrown forward, he applies a force to the water, and according to the laws of physics, the water opposes this force. The water pushing the swimmer back is called the frictional force, this force varies according to the swimmer's structure and speed.
Competitors first shaved their entire bodies and previously wore friction-reducing clothing, but after 2010 all of these were banned.

Z.Selim İzmir Vocational Training Center(N.Afşar)

2021-06-23 11:52:01 UTC

Frictional force. When you stroke, you can feel how the water is resisting. This resistance is called hydrodynamic friction in physics. Every time a swimmer makes a stroke, the water uses its massive force to push him back.

Emrullah.I İzmir Vocational Training Center(N.Afşar)

2021-06-23 12:01:43 UTC

It should also be noted that the underwater trajectory and depth may affect the transition to the next stage,
because if the trajectory is done poorly it can slow down swimmers. 40 between the body and the surface when entering the water.
degree angle reduces the surface tension force of the water and at the same time after entering the water
helps the swimmer to stay at the correct depth level (Cortesi and Gatta, 2015). entry angle,
It affects the drag force and the average velocity of the following phase. r. Yüzücülerin aşırı sürükleme kuvvetinden kaçınmak için yüzeyin en az 0,5 m altına gitmeleri önerilir ( Tor, Pease ve Ball, 2015b). Su altı sırasında maksimum -0.92 (± 0.16) m derinliğe sahip olacak şekilde yörüngeyi takip etmek bu aşamada kaybedilen hızı en aza indirmenin en etkili yolu olduğu bildirilmiştir (Tor ve diğerleri, 2015a). Su girişindeki büyük kalça açıları; suya büyük bir giriş açısı sağlamanın yanı sıra su altı aşamasında bir yunus tekmesi kullanımıyla sagital düzlemde yatay hızdaki kaybı en aza indirir. Bu durum sporcuya yüksek açısal hız ve eylemsizlik momentinin daha fazla kontrolünü sağlayarak blok üzerinde yüksek açısal momentum sağlar

Cankat.T İzmir Vocational Training Center (N.Afşar)

2021-06-23 12:06:33 UTC

Alternatively, a swimmer may be produced by his neighboring competitors.
can 'ride' the waves and take advantage of the thrust. This effect is most evident in animal experiments.
occurs when the swarm is positioned in a V shape in accordance with the dynamics of the fluids.
known. Also, the waves produced when a wave trough and a wave crest meet.
The wave cancellation effect, which reduces drag and reduces drag, occurs (Alp and Kılınç, 2015).
In the underwater propulsion phase, swimmers move their feet vertically at the same time in a wave motion.
The effectiveness of this phase includes frequency, kick amplitude, propulsive symmetry, muscle strength, and hydrodynamics.
is related to the position (Matsuura, Matsunaga, Iizuka, Akuzawa, & Kaneoka, 2020). swimming wave
after finishing the underwater thrust, should continue the alternate kick thrust motion while the head breaks the water surface
or upper extremity thrust moment should begin

Ali.Y İzmir Vocational Training Center (N.Afşar)

2021-06-23 12:09:08 UTC

Making a positive contribution to empowerment in entry development 200-230
 According to Newton's second law: The acceleration of an object is directly proportional to the resultant force acting on it and inversely proportional to its mass. Therefore, the more acceleration in the horizontal plane, the more distance the swimmer travels. In the vertical plane, the higher the speed, the deeper the swimmer goes in the underwater phase.