What is the angular momentum of a rod with a mass of $15 kg$ and length of $7 m$ that is spinning around its center at $15 Hz$ ?

Question

1523 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-01-20T14:00:12

The angular momentum is $=5572.7kgms^-1$

The angular momentum is $L=Iomega$

For a rod, $I=(mL^2)/12$

So, $I=15*(7)^2/12=61.25kgm^2$

$omega=15*2pi=30pi rads^-1$

$L=61.25*30pi=5572.7kgms^(-1)$

What is the angular momentum of a rod with a mass of 15 kg15 kg and length of 7 m7 m that is spinning around its center at 15 Hz15 Hz?