write the advantages and disadvantages of dimensional analysis?

** ADVANTAGES OF DIMENSIONAL ANALYSIS : **

- it helps in conversion of one system of units into the other .
- it is useful in checking the correctness of the given physical relation .
- it helps in deriving relationship between various physical quantities ...

**DISADVANTAGES OF DIMENSIONAL ANALYSIS : **

- dimensionless constant involved in the physical relation cannot be determined ..
- it fails to give information about trigonometric functions , logarithmic , exponential quantities involved in the physical relation ...
- since there are only 3 quantiies namely M , L and T whose powers can be compared on both sides thus , it fails to derive relation between a quantity which depends on more than 3 factors ..
- it fails to derive relations like : S = ut + 1/2 at
^{2}, v^{2}-u^{2}= 2as ..

hope u got it ...