What is the angular momentum of a rod with a mass of #15 kg# and length of #4 m# that is spinning around its center at #24 Hz#?

Question

1269 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-07-18T17:01:20

The angular momentum is #=3015.9kgm^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*4^2= 20 kgm^2#

The angular velocity is

#omega=2pif=2pi*24=48pirads^-1#

The angular momentum is

#L=Iomega=20*48pi=3015.9kgm^2s^-1#