What is the angular momentum of a rod with a mass of $15 kg$ and length of $4 m$ that is spinning around its center at $24 Hz$ ?

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Answer 1 · 2017-07-18T17:01:20

The angular momentum is $=3015.9kgm^2s^-1$

The angular momentum is $L=Iomega$

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

$I=1/12*mL^2$

$=1/12*15*4^2= 20 kgm^2$

The angular velocity is

$omega=2pif=2pi*24=48pirads^-1$

The angular momentum is

$L=Iomega=20*48pi=3015.9kgm^2s^-1$

What is the angular momentum of a rod with a mass of 15 kg15 kg and length of 4 m4 m that is spinning around its center at 24 Hz24 Hz?