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Dimensions of strain- Fluid Mechanics
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Fluid Mechanics
Q. Which of the following quantities has the dimensions [M
0
L
0
T
0
]
- Published on 04 Aug 15
a.
Density
b.
Stress
c.
Strain
d.
Strain Rate
ANSWER: Strain
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Discussion
Pankaj
-Posted on 05 Oct 15
In dimensional analysis, it is assumed that the phenomenon can be expressed by a dimensionally homogeneous equation with certain variables.
Different physical quantities which are used in fluid phenomenon are formed by some fundamental quantities or primary quantities such as mass, length, time and temperature.
The dimensions given are [M
0
L
0
T
0
]
It is a dimensionless term. Among the above options, strain in a dimensionless term.
Therefore strain has dimensions [M
0
L
0
T
0
]
For other options,
Density = Mass / Volume
Stress = Force / Area
There are not dimensionless terms.
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