What is the angular momentum of a rod with a mass of #15 kg# and length of #7 m# that is spinning around its center at #6 Hz#?

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Answer 1 · 2017-07-17T13:22:15

The angular momentum is #=735kgm^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*7^2= 245/4 kgm^2#

The angular velocity is

#omega=2pif=2pi*6=12pirads^-1#

The angular momentum is

#L=I omega=245/4*12=735kgm^2s^-1#