浮力

• 拼音: fú lì
• 汉字拆解: 浮 = 氵 + 孚 (float on water); 力 = 力 (force, strength)

含义

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.

例句

1. 阿基米德原理揭示了物体在液体中所受浮力的规律。
2. 救生衣利用浮力使落水者保持漂浮状态。
3. 这种新型材料密度极低，在水中具有极强的浮力。

用法指南

语境: science, education

语气: neutral

正确说法

• 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.)

错误说法

• 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

起源与历史

浮 (float) + 力 (force/power)

文化背景

世代: All ages

社会背景: Universal