Dimensional Analysis (AQA A-Level Further Maths): Flashcards

Technique examining relationships between physical quantities

M (Mass), L (Length), T (Time)

Square brackets: $[quantity]$ in terms of M, L, T

$LT^{-1}$

Pure numbers and angles (in radians)

$ML^2T^{-2}$

All added/subtracted terms have identical dimensions

$LT^{-2}$

Can't prove formula correct, only show if it's wrong

Assume form with unknown powers, equate & solve dimensions