Category:Buoyancy

**buoyancy**
	upward force that opposes the weight of an object immersed in fluid
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Instance of	physical phenomenon;
Subclass of	surface force;
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Deutsch: Auftrieb

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Français : portance

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日本語: 浮力

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Deutsch: Als Auftrieb bezeichnet man eine der Schwerkraft entgegengesetzte Kraftwirkung in Flüssigkeiten oder Gasen.

English: In physics, buoyancy is a force exerted by a liquid, gas or other fluid, that opposes an object's weight. In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid. Thus a column of fluid, or an object submerged in the fluid, experiences greater pressure at the bottom of the column than at the top. This difference in pressure results in a net force that tends to accelerate an object upwards. The magnitude of that force is proportional to the difference in the pressure between the top and the bottom of the column, and is also equivalent to the weight of the fluid that would otherwise occupy the column. For this reason, an object whose density is greater than that of the fluid in which it is submerged tends to sink. If the object is either less dense than the liquid or is shaped appropriately (as in a boat), the force can keep the object afloat. This can occur only in a reference frame which either has a gravitational field or is accelerating due to a force other than gravity defining a "downward" direction (that is, a non-inertial reference frame). In a situation of fluid statics, the net upward buoyancy force is equal to the magnitude of the weight of fluid displaced by the body.

Français : La portance est la composante de la force subie par un corps en mouvement dans un fluide qui s'exerce perpendiculairement à la direction du mouvement.

<nowiki>flotabilidad; Uppdrif; keapungan; Плаваемост; Flotabilitate; قوت اچھال; vztlak; плавучість; 浮力; ການລອຍຕົວ; لەيلىتىش كۈچى; flosforto; vztlak; potisak; প্লবতা; flottabilité; uzgon; Lực nổi; Dryfvermoë; Узгон; Simudzo; Phû-le̍k; oppdrift; Batmazlıq; سەرئاوکەتن; buoyancy; طفو; ဖော့ဂုဏ်; 浮力; felhajtóerő; flotagarritasun; Flotabilidá; باتمازلیق; hynofedd; Pluskueshmëria; شناوری; 浮力; opdrift; उर्ध्वचाप; 浮力; උත්ප්ලාවකතාව; उत्प्लावन बल; uthlpavanam; noste; மேலுதைப்பு; galleggiamento; Flotabilite; Üleslükkejõud; Άνωση; 浮力; Gaya apung; 부력; Uzgon; impulsão; flotabilitat; пловност; 浮力; buacacht; vzgon; statischer Auftrieb; Batmazlık; ציפה; แรงลอยตัว; siła wyporu; പ്ലവക്ഷമബലം; drijfkracht; плывучасць; плывучасьць; flytkraft; ਉਤਪਲਾਵਨ ਬਲ; Flotabilidade; oppdrift; gałizasion; сила плавучести; capacidad de un cuerpo para sostenerse dentro de un fluido; phénomène; сіла, якая ўзьдзейнічае на пагружаны ў вадкасьць аб’ект; свойство погружённого в жидкость тела; physikalisches Phänomen; نیرویی رو به بالا که با نیروی وزن جسم شناور در مایع مخالفت می‌کند; 向上浸入流体中物体重量的向上作用力; 水などの流体中にある物体に重力とは逆の方向に作用する力; siła wynikająca z prawa Archimedesa; כוח שמפעיל נוזל או גז כלפי מעלה כנגד משקלו של גוף המצוי בתוכו; kappaletta ympäröivän väliaineen staattisen paineen kappaleeseen kohdistama voima; uthplavanam; 유체에 잠겨있는 물체가 중력에 반하여 밀어 올려지는 힘; upward force that opposes the weight of an object immersed in fluid; capacità di un corpo di opporre una forza che si oppone al suo peso quando immerso in un fluido; síla zvedající objekt ponořený v kapalině; Μία ανοδική δύναμη που αντιτίθεται στο βάρος ενός αντικειμένου που βυθίζεται στο ρευστό.; плавучесть; плавание тел; сила Архимеда; Archimedeskracht; opwaartse stuwkracht; drijfvermogen; hydrostatischer Auftrieb; aerostatischer Auftrieb; توانای سەرئاوکەتن; upthrust; wypór; julangan; tujah ke atas; uzgon</nowiki>