Question

The dimension o $f$ angular momentum in mass $(M)$, length $(L)$ and time $(T)$ is:

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

Answer 1

Answer: (C)

Angular momentum for a point mass about an axis with velocity component of $v$ perpendicular to the radial direction is given by Angular momentum,
$L=m v r$ Dimension formula of angular momentum
$=[M]\left[L T^{-1}\right][L]=\left[M L^{2} T^{-1}\right]$