Question

how to remember dimensional formula easily?

Answer 1

You can write it on a paper in dark writing and paste it in the room in which u spent more time, And make a routine to see that paper just paste it on a wall by which u can see the paper daily then after some days u surprised that u learn the formula.It's. a real thing which is practised by many people and they get learnt the formul v. easily!!!

Answer 2

you will just need to remember the formula in terms of the quantities which you have the dimension formula.
as force= mass times acceleration.
so dimension of force = dimensions of mass times dimensions of acceleration.
= [M][LT-1]=[MLT-1]