First slide

Dimensions of physical quantities

Question

Find the dimensional formula of Force.

Easy

A

$[{MLT}^{- 2}]$
B

Dimensionless
C

$[{MLT}^{- 4}]$
D

$[{MLT}^{2}]$

Solution

$Force, [F] = [ma] [F] = [m] [a] = [M] [{LT}^{- 2}] = [{MLT}^{- 2}]$

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