Momentum is defined as the quantity of motion. Only moving bodies possess momentum. It is a vector quantity and its direction is same as that of velocity. Momentum is measured as the product of mass and velocity. Momentum of a body is a measure of the ...
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Limitations of Dimensional Analysis
Ashmeeta Bhattarai asked:
“What are limitations of principle of homogeneity of dimensional analysis?”
The dimensional analysis has the following limitations
- It fails while using it to derive a relation among physical quantities, if there are more than 3 unknown variables on which a given physical quantity depends
- It does not tell whether a given Physical quantity is a scalar or a vector.
- It does not tell us the value of constants involved
- It does not always tell us the exact FORM of a relation
- It cannot be used for deriving logarithmic, trigonometric or exponential relations
- A dimensionally correct equation may not always be the correct relation. (Because there are more than one physical quantity having the same dimensions)
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