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 $2 7 Hz$ ?

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Answer 1 · 2017-06-19T12:34:32

The angular momentum is $=1131kgm^2s^-1$

The angular momentum is $L=Iomega$

and $omega$ is the angular velocity

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

$I=1/12*mL^2$

$=1/12*5*4^2= 20/3 kgm^2$

The angular velocity is

$omega=2pif=2pi*27=54pirads^-1$

The angular momentum is

$L=I omega=20/3*54pi=1131kgm^2s^-1$

What is the angular momentum of a rod with a mass of 5 kg5 kg and length of 4 m4 m that is spinning around its center at 2 7 Hz 2 7 Hz?