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 at2 , v2-u2 = 2as ..
hope u got it ...