What is the angular momentum of an object with a mass of $3 kg$ that moves along a circular path of radius $9 m$ at a frequency of $2/3 Hz$ ?

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Answer 1 · 2017-12-25T07:44:29

The angular momentum is $=1017.9kgm^2s^-1$

The angular momentum is $L=Iomega$

For the object , the moment of nertia is

$I=mr^2$

The mass is $m= 3kg$

The radius is $r=9m$

So, $I=3*(9)^2=243kgm^2$

The angular velocity is

$omega=2pif=2*pi*2/3=4/3pirads^-1$

The angular momentum is

$L=243*4/3pi=1017.9kgm^2s^-1$