buoyant force

简明释义

浮力;

英英释义

例句

1.When you dive into the pool, the buoyant force 浮力 pushes you back up to the surface.

当你跳入游泳池时，浮力将你推回水面。

2.The buoyant force 浮力 acting on the boat keeps it afloat on the water.

作用在船上的浮力使其漂浮在水面上。

3.Understanding buoyant force 浮力 is crucial for designing ships and submarines.

理解浮力对设计船只和潜艇至关重要。

4.A helium balloon rises due to the buoyant force 浮力 exerted by the surrounding air.

氦气球因周围空气施加的浮力而上升。

5.The buoyant force 浮力 is equal to the weight of the water displaced by the submerged object.

对于浸没物体来说，浮力等于被排开的水的重量。

作文

Understanding the concept of buoyant force is essential in the study of physics, particularly in fluid mechanics. The buoyant force is defined as the upward force exerted by a fluid on an object that is submerged or floating in it. This phenomenon occurs due to the pressure difference between the top and bottom of the object immersed in the fluid. According to Archimedes' principle, the buoyant force acting on an object is equal to the weight of the fluid displaced by that object. This principle explains why some objects float while others sink. To illustrate this concept, consider a simple example: a rubber duck placed in a bathtub filled with water. When the rubber duck is placed in the water, it displaces a certain volume of water. The weight of this displaced water generates a buoyant force that acts upward against the weight of the rubber duck. If the weight of the rubber duck is less than the buoyant force, it will float; if it is greater, the duck will sink. This simple experiment demonstrates how the buoyant force operates in everyday life.The implications of the buoyant force extend beyond rubber ducks in bathtubs. It plays a crucial role in various fields, including engineering, marine biology, and even aviation. For instance, ships and submarines are designed with the principles of buoyant force in mind. A ship floats because its overall density is less than that of the water it displaces, allowing it to remain afloat. Submarines can control their buoyancy by adjusting the amount of water in their ballast tanks, enabling them to ascend or descend in the water. In aviation, the concept of buoyant force is also applicable, particularly when discussing hot air balloons. A hot air balloon rises because the heated air inside the balloon is less dense than the cooler air outside. This difference in density creates a buoyant force that lifts the balloon into the sky. The ability to manipulate this force allows pilots to navigate and control the altitude of their balloons effectively.Moreover, understanding buoyant force is vital for scientists studying aquatic life. Many fish and other marine organisms have developed specialized adaptations to regulate their buoyancy, allowing them to maintain their position in the water column without expending energy. For example, fish possess swim bladders, gas-filled organs that help them achieve neutral buoyancy. By adjusting the amount of gas in their swim bladders, fish can rise or sink in the water effortlessly.In conclusion, the buoyant force is a fundamental concept that affects many aspects of our lives, from the design of ships and submarines to the flight of hot air balloons and the survival of aquatic creatures. By grasping the principles behind the buoyant force, we gain insight into the natural world and the physical laws that govern it. Whether we are floating in a pool, watching a boat sail, or observing fish in a tank, the buoyant force is always at work, silently shaping our experiences in the fluid environments around us.

理解浮力的概念在物理学，尤其是流体力学的研究中至关重要。浮力被定义为流体对浸没或漂浮在其中的物体施加的向上力量。这种现象是由于浸入流体的物体顶部和底部之间的压力差造成的。根据阿基米德原理，作用于物体的浮力等于该物体所排开的流体的重量。这个原理解释了为什么一些物体会浮起来，而另一些则会沉下去。为了说明这一概念，可以考虑一个简单的例子：放在装满水的浴缸中的橡皮鸭。当橡皮鸭放入水中时，它会排开一定体积的水。被排开的水的重量产生了一种向上的浮力，抵消了橡皮鸭的重量。如果橡皮鸭的重量小于浮力，它就会浮起来；如果大于，它就会沉下去。这个简单的实验演示了浮力在日常生活中的运作。浮力的影响不仅限于浴缸中的橡皮鸭。它在工程、海洋生物学甚至航空等多个领域都发挥着关键作用。例如，船只和潜艇的设计都遵循浮力的原理。一艘船之所以能够浮起，是因为它的整体密度小于它排开的水的密度，从而使其保持漂浮。潜艇可以通过调整压载水箱中的水量来控制其浮力，从而实现在水中的上升或下降。在航空领域，浮力的概念同样适用，特别是在讨论热气球时。热气球之所以上升，是因为气球内部的热空气比外部的冷空气密度小。这种密度差产生了将气球抬升到空中的浮力。操控这种力量的能力使得飞行员能够有效地导航和控制热气球的高度。此外，了解浮力对于研究水生生物的科学家来说也至关重要。许多鱼类和其他海洋生物发展出了专门的适应性来调节它们的浮力，使它们能够在水柱中保持位置而不耗费能量。例如，鱼类具有充气囊，这是一种充满气体的器官，帮助它们实现中性浮力。通过调整充气囊中的气体量，鱼类可以轻松地上升或下沉。总之，浮力是一个基本概念，影响着我们生活的许多方面，从船只和潜艇的设计，到热气球的飞行，再到水生生物的生存。通过掌握浮力背后的原理，我们可以深入了解自然世界及其支配的物理法则。无论我们是在游泳池中漂浮，观看船只航行，还是观察水族箱中的鱼，浮力始终在起作用，默默地塑造着我们在周围流体环境中的体验。