What is the angular momentum of a rod with a mass of $8 kg$ and length of $6 m$ that is spinning around its center at $3 Hz$ ?

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Answer 1 · 2018-01-25T07:00:12

The angular momentum is $=452.4kgm^2s^-1$

The angular momentum is $L=Iomega$

The mass of the rod is $m=8kg$

The length of the rod is $L=6m$

The moment of inertia of a rod, rotating about the center is

$I=1/12*mL^2$

$=1/12*8*6^2= 24 kgm^2$

The frequency is $f=3Hz$

The angular velocity is $omega=2pif=2*3*pi=6pirads^-1$

The angular momentum is

$L=Iomega=24*6pi=452.4kgm^2s^-1$

What is the angular momentum of a rod with a mass of 8 kg8 kg and length of 6 m6 m that is spinning around its center at 3 Hz3 Hz?