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 $5 Hz$ ?

Question

1418 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-01-05T11:03:08

The angular momentum is $=1924.2kgms^(-1)$

The angular momentum is $L=Iomega$

and $omega$ is the angular velocity

For a rod, the moment of inertia is $I=(mL^2)/12$

$m=$ mass of the rod

$L=$ length of the rod

So, $I=15*(7)^2/12=245/4kgm^2$

$omega=5*2pi=10pi rads^-1$

$L=245/4*10pi=1924.2kgms^(-1)$

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 5 Hz5 Hz?