Why we use only M, L & T as base units in the dimensionally fromula
Let us consider other possibilities of physical quantities which can be used in the dimensional analysis,
Instead of M,L and T if we use V,L and T it is observed that the usage of V is redundant as V itself, is a derived physical quantity, as where V is the dimensional abbreviation for Velocity.
Similarly even the usage of F for force will not give us a linear or fundamental dimensional representation for a physical quantity, because, .
Thus it is concluded that the usage of M, L and T where M :-Mass, L:- Length and T:-Time is the most preferred base units in the dimensional formula as it gives us perfectly linear and a fundamental dimensional analysis.
It also be learnt that for representing temperature, K is used as the base unit.
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