Write $SI$ unit of angular momentum and dimensional formula. 

Explain Angular momentum of a particle and show that it is the moment of linear momentum about the reference point. 

The position of a particle is given by : $\overrightarrow {r\,}  = (\hat i + 2\hat j - \hat k)$ and momentum $\overrightarrow P  = (3\hat i + 4\hat j - 2\hat k)$. The angular momentum is perpendicular to        

The time dependence of the position of a particle of mass $m = 2$ is given by $\vec r\,(t)\, = \,2t\,\hat i\, - 3{t^2}\hat j$ Its angular momentum with respect to the origin at time $t = 2$ is

A particle of mass $m$ moves along line $PC$ with velocity $v$ as shown.  What is the angular momentum of the particle about $O$ ​

In an orbital motion, the angular momentum vector is