What is the angular momentum of a rod with a mass of # 6 kg# and length of #9 m# that is spinning around its center at #3 Hz#?

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Answer 1 · 2017-05-25T13:15:34

The angular momentum is #=763.4kgm^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*6*9^2= 40.5 kgm^2#

The angular velocity is

#omega=(3)*(2pi)=6pirads^-1#

The angular momentum is

#L=40.5*6pi=763.4kgm^2s^-1#