浮力

• Pinyin: fú lì
• Hanzi breakdown: 浮 = 氵 + 孚 (float on water); 力 = 力 (force, strength)

Meaning

Buoyancy; the upward force exerted by a fluid on a submerged or floating object.

A core concept in physics and engineering. Used in marine science, naval architecture, and educational contexts. Commonly appears in physics textbooks when discussing Archimedes' principle.

Examples

1. 阿基米德原理揭示了物体在液体中所受浮力的规律。 Archimedes’ principle reveals the law governing buoyant force on objects in a liquid.
2. 救生衣利用浮力使落水者保持漂浮状态。 A life jacket uses buoyancy to keep someone who has fallen into the water afloat.
3. 这种新型材料密度极低，在水中具有极强的浮力。 This new material has an extremely low density and very strong buoyancy in water.

Usage Guide

Context: science, education

Tone: neutral

Do Say

• 物体所受的浮力等于其排开液体的重力。(The buoyancy force on an object equals the weight of the fluid it displaces.)
• 船只能够漂浮在水面上，是因为所受浮力大于自身重力。(A ship floats because the buoyancy it receives exceeds its own weight.)

Don't Say

• 空气中也没有浮力 — air does provide buoyancy; use 空气浮力 if referring specifically to the buoyancy in air

Origin & History

浮 (float) + 力 (force/power)

Cultural Context

Generation: All ages

Social background: Universal