Question

Dimensional formula for force is

• A. $[ML^{2}T^{-2}]$
• B. $[MLT^{-2}]$
• C. $[ML^{-1}T^{-2}]$
• D. $[ML^{-2}T^{-2}]$

Answer 1

Answer: (B)

$[MLT^{-2}]$

Answer 2

Force $=$ mass $\times$ acceleration or $F=$ ma
$\therefore[F]=[m][a] =[M]\left[L T^{-2}\right]$
$=\left[M L T^{-2}\right]$