Question

What is the angular momentum of a rod with a mass of `5 kg` and length of `4 m` that is spinning around its center at `1 7 Hz`?

Answer 1

The angular momentum is `=340/3kgm^2s^(-1)`

Explanation:

The angular momentum is `L=Iomega`

Where, `I=`moment of inertia

and `omega=` angular velocity

The moment of inertia of the rod is `=(ml^2)/12`

`m=5 kg`

`l=4 m`

Therefore, `I=(5*4^2)/12=20/3 kgm^2`

`omega=17 Hz`

So, `L=17*20/3=340/3kgm^2s^(-1)`