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Question

A cylinder of mass 5 kg and radius 4 m is rolling purely on a horizontal surface. What will be the angular momentum of the cylinder with respect to any point on the ground if its centre of mass moves with the velocity of 20 m/s?

A
800 Kgm2s
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B
600 Kgm2s
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C
1000 Kgm2s
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D
400 Kgm2s
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Solution

The correct option is B 600 Kgm2s
As explained in the previous videoclip,
L=Iω+mRVcm
=mR22ω+mRVcm
also, V = Rω
L=5(4)252+5.20×4
=200+400=600kgm2s

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