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A horizontal plane supports a fixed vert...

A horizontal plane supports a fixed vertical cylinder of radius `R` and a particle is attached to the cylinder by a horizontal thread `AB` as shown in Fig. The particle initially rest on a horizontal plane. A horizontal velocity `v_(0)` is imparted to the particle, normal to the threading during subsequent motion. Point out the false statements:

A

angular momentum of particle about O remains constant

B

angular momentum about B remains constant

C

momentum and kinetic energy both remain constant

D

kinetic energy along remains constant

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The correct Answer is:
D
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