Question

What is the angular momentum of a rod with a mass of `8 kg` and length of `4 m` that is spinning around its center at `9 Hz`?

Answer 1

`L=192*pi`

Explanation:

`L" :Angular momentum"`
`omega " :Angular velocity"`
`I" :moment of inertia of rod"`
`"Angular momentum for a rotating object is given by: L="I*omega`
`omega =2*pi*f`
`I=1/12*m*l^2" (for rod rotating around its center)"`
`L=1/12*m*l^2*2*pi*f`
`L=1/12*8*4^2*2*pi*9`
`L=192*pi`