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The SI derived unit is the "kilogram per square metre" (kg·m −2). In the paper and fabric industries, it is called grammage and is expressed in grams per square meter (g/m 2); for paper in particular, it may be expressed as pounds per ream of standard sizes ("basis ream").
In the following formulae, BSA is expressed in m 2, weight (or, more properly, mass) W in kg, and height H in cm. The most widely used is the Du Bois formula, [ 4 ] [ 5 ] which has been shown to be equally as effective in estimating body fat in obese and non-obese patients, something the Body mass index fails to do.
This is an accepted version of this page This is the latest accepted revision, reviewed on 21 January 2025. Relative weight based on mass and height Medical diagnostic method Body mass index (BMI) Chart showing body mass index (BMI) for a range of heights and weights in both metric and imperial. Colours indicate BMI categories defined by the World Health Organization ; underweight, normal ...
Specific surface area (SSA) is a property of solids defined as the total surface area (SA) of a material per unit mass, [1] (with units of m 2 /kg or m 2 /g). Alternatively, it may be defined as SA per solid or bulk volume [2] [3] (units of m 2 /m 3 or m −1).
SD kg/cm 2 is the sectional density in kilograms per square centimeter; m g is the mass of the projectile in grams; d cm is the diameter of the projectile in centimeters; For example, an M107 projectile with a mass of 43.2 kg and having a body diameter of 154.71 millimetres (15.471 cm) has a sectional density of: 4 · 43.2 / (π·154.71 2) = 0. ...
Given two bodies, one with mass m 1 and the other with mass m 2, the equivalent one-body problem, with the position of one body with respect to the other as the unknown, is that of a single body of mass [1] [2] = = + = +, where the force on this mass is given by the force between the two bodies.
The SI has special names for 22 of these coherent derived units (for example, hertz, the SI unit of measurement of frequency), but the rest merely reflect their derivation: for example, the square metre (m 2), the SI derived unit of area; and the kilogram per cubic metre (kg/m 3 or kg⋅m −3), the SI derived unit of density.
Human body weight is a person's mass or weight.. Strictly speaking, body weight is the measurement of mass without items located on the person. Practically though, body weight may be measured with clothes on, but without shoes or heavy accessories such as mobile phones and wallets, and using manual or digital weighing scales.