🛟 浮力计算器（阿基米德原理）Buoyancy Calculator (Archimedes' Principle)

使用说明与常见问题How-to & FAQ

「浮力计算器（阿基米德原理）」是什么？What is the Buoyancy Calculator (Archimedes' Principle) tool?

按阿基米德原理 F = ρ·g·V 计算物体在液体中受到的浮力，并根据物体密度判断它会漂浮还是下沉、漂浮时有多少体积浸在液体中。Calculate the buoyant force F = ρ·g·V from Archimedes' principle, and from the object's density tell whether it floats or sinks and how much of it sits below the surface.

如何使用「浮力计算器（阿基米德原理）」？How do I use the Buoyancy Calculator (Archimedes' Principle) tool?

在「浮力计算器（阿基米德原理）」中，填写「液体」、「自定义液体密度 kg/m³」、「物体体积（m³）」、「物体质量 kg（可选）」、「重力加速度 m/s²」等参数，结果会随输入实时计算并显示在下方。In the Buoyancy Calculator (Archimedes' Principle): Fill in "Fluid", "Custom fluid density kg/m³", "Object volume (m³)", "Object mass kg (optional)", "Gravity m/s²"; results are recalculated instantly as you type.

浮力公式？What is the buoyancy formula?

F = ρ_液 × g × V_排：浮力等于物体排开液体的重力。完全浸没时 V_排 等于物体体积。F = ρ_fluid × g × V_displaced: the buoyant force equals the weight of fluid displaced. Fully submerged, V_displaced is the object's volume.

怎么判断沉浮？How do I know if it floats?

物体平均密度小于液体密度就会漂浮，漂浮时浸入的体积比例 = 物体密度 ÷ 液体密度；大于液体密度就下沉。If the object's average density is below the fluid's it floats, with fraction submerged = object density ÷ fluid density; if higher, it sinks.

计算结果可以用于作业或工程吗？Can I use the results for homework or engineering?

「浮力计算器（阿基米德原理）」使用教科书标准公式（公式写在说明和常见问题中），适合学习和估算核对；涉及安全的工程设计请以规范和实测为准。The Buoyancy Calculator (Archimedes' Principle) uses standard textbook formulas (given in the description and FAQ), which is good for learning and checking estimates; for safety-critical engineering follow codes and measured values.

「浮力计算器（阿基米德原理）」免费吗？需要注册吗？Is the Buoyancy Calculator (Archimedes' Principle) free? Do I need an account?

「浮力计算器（阿基米德原理）」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Buoyancy Calculator (Archimedes' Principle) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.