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![[Post New]](/templates/default/images/icon_minipost_new.gif) 19 Aug 2007 21:49:23 IST
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Well i dont see any need to learn all the formulae, cant u derive them at any point of time
Instead of mugging those dimensional formulae, practice in deriving them, it wud be more efficient
S'pose u mug all the formulae but at the time of examination u forget a power of quantity or even to put + or -, then wat
so practice the derivation
s'pose u want the dimensional formula of power
Write P = W/t
W = F * dist.
F = m * a
now unit of accn is m/s^2 dimensionally it is LT^(-2)
Force => MLT(^-2)
W = ML(^2)t(^-2)
P => ML(^2)T(^-3)
In a simlar way u can derive the formulae if u know the basic formulae
Rate if this helps u ...
Cheerz!!!!!!!!!!
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