What is the angular momentum of a rod with a mass of $2 kg$ and length of $7 m$ that is spinning around its center at $13 Hz$ ?

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Answer 1 · 2017-04-07T08:48:17

The angular mmentum is $=667.1kgm^2s^-1$

The angular momentum is $L=Iomega$

and $omega$ is the angular velocity

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

$I=1/12*mL^2$

$=1/12*2*7^2= 8.17 kgm^2$

The angular velocity is

$omega=13*2pi=(26pi)rads^-1$

The angular momentum is

$L=8.17*26pi=667.1kgm^2s^-1$

What is the angular momentum of a rod with a mass of 2 kg2 kg and length of 7 m7 m that is spinning around its center at 13 Hz13 Hz?