What is the angular momentum of an object with a mass of $5 kg$ that moves along a circular path of radius $9 m$ at a frequency of $2/9 Hz$ ?

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Answer 1 · 2016-12-27T13:33:31

The answer is $=50pi=157.1kgms^(-1)$

The angular momentum is $L=Iomega$

For a solid disc, $I=(mr^2)/2$

So, $I=5*(9)^2/2=225/2kgm^2$

$omega=2/9*2pi=4/9pi rads^(-1)$

$L=225/2*4/9pi=50pi=157.1kgms^(-1)$