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)#