浮力

fúlì

buoyancy

HSK 7

Character Breakdown

Understanding 浮力 (Buoyancy)

浮力 refers to the upward force that a fluid (liquid or gas) exerts on an object immersed in it, allowing the object to float or rise. This concept is fundamental in physics and everyday phenomena such as boats floating on water or balloons rising in the air.

Common Contexts

You will often encounter 浮力 in scientific discussions about physics, diving, and aeronautics. For example, when talking about why ships float or how hot air balloons work.

Typical Collocations

  • 浮力 (water's buoyancy): describes the buoyant force exerted by water.
  • 浮力变化 (change in buoyancy): important in diving and fluid mechanics.
  • 产生浮力 (generate buoyancy): used when explaining how buoyancy arises.

Usage Notes

When using 浮力, it is usually in a scientific or technical context. It is not commonly used in casual conversation unless discussing related topics. Avoid confusing 浮力 with (force) alone; 浮力 specifically refers to buoyant force.

Common Confusion

Do not confuse 浮力 with 浮现 (to emerge or appear) or 浮动 (to fluctuate). 浮力 is a noun describing a physical force, not a verb or adjective.

Example Sentences

船能够在水面上漂浮,是因为水对船有浮力。

Chuán nénggòu zài shuǐmiàn shàng piāofú, shì yīnwèi shuǐ duì chuán yǒu

A boat can float on the water because the water exerts buoyancy on it.

潜水员必须了解浮力的变化,才能安全潜水。

Qiánshuǐyuán bìxū liǎojiě fúlì de biànhuà, cáinéng ānquán qiánshuǐ.

Divers must understand changes in buoyancy to dive safely.

热气球上升是因为热空气产生的浮力大于重力。

Rèqìqiú shàngshēng shì yīnwèi rè kōngqì chǎnshēng de fúlì dà yú zhònglì.

A hot air balloon rises because the buoyant force from the hot air is