Buoyant Force, General Fluid

浮力，一般流体

Determination of density of fluid

流体密度的测定

You can determine liquid density using Archimedes principle if you have a standard object of
mass m = grams
and known volume = V = cm³.
(The density of the standard object in this case is known to be gram/cm³)

If this standard object is submerged in a fluid and found to have apparent mass m' = grams

then it has displaced m - m' = grams of the fluid. Since the mass of fluid displaced has been measured, and the volume of liquid corresponding to that mass is known to be the volume of the standard object,

the liquid density is then ρ = m/V = gm/cm³.

液体的密度则是 ρ = m/V = g/cm³。

中文译文中的待填/计算数值依次对应：1：d。实际数值以上方原输入框为准。

While this is a useful experimental procedure, it is more common to use a known liquid to determine the density of a submerged object, and the typical process uses immersion in water for density determination, as in the classic Archimedes story.

Note that in the experimental arrangement, the container of fluid in which the object is submerged is supported on a platform so that the balance scale does not include the measurement of the mass of the water and its container.

你可以利用阿基米德原理确定液体的密度，如果你有一个质量为 m = 克的标准物体和已知的体积 V = 立方厘米。（在这种情况下，标准物体的密度已知为克/立方厘米）如果这个标准物体被浸入流体中，并发现其 apparent mass 为 m' = 克，那么它会排开 m - m' = 克的流体。由于排开的流体质量已测得，而对应该质量的流体体积已知为标准物体的体积，虽然这是一个有用的实验方法，但更常见的是使用已知液体来确定浸入物体的密度，典型过程使用浸入水中来确定密度，如经典的阿基米德故事所述。请注意，在实验装置中，浸入物体的流体容器支撑在平台上，以确保天平不包括水和容器的质量测量。

中文译文中的待填/计算数值依次对应：1：m 2：v 3：df 4：mp 5：dm。实际数值以上方原输入框为准。

Index

Buoyancy concepts

索引：浮力概念

HyperPhysics***** Mechanics ***** Fluids

HyperPhysics ***** 力学 ***** 流体

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