Força de Empuxo
Algumas das aplicações úteis do
empuxo
e
Princípio de Arquimedes
são usados para determinação experimental da
densidade
.
Determinação da densidade por imersão na água.
Determinação da densidade por imersão num líquido genérico
.
Determiação da densidade de um líquido por imersão de um objeto padrão
.
Índices
Conceitos de Empuxo
*****
Mecânica
*****
Fluidos
Voltar
Força de Empuxo, Fluido Geral
If an object is massed in air and found to have mass
m
=
grams
and is then submerged in a fluid and found to have apparent mass
m'
=
grams
then it has displaced
m - m'
=
grams of the fluid. If the density of the fluid is
gram/cm^3, this implies
Volume of object =
V
=
cm^3.
The density of the object is then
This calculation assumes that the density of the liquid is known, and allows you to change mass, apparent mass, volume or density to explore variations. If you wish to determine the liquid density, then go to
fluid density determination
. Use of a liquid other than water is sometimes useful, but the most common experimental procedure is
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.
Index
Buoyancy concepts
*****
Mecânica
*****
Fluido
Voltar
