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Q.

A heavy disc is thrown on a horizontal surface in such a way that it slides with speed vo initially without rolling. It will start rolling without slipping when its speed reduces to:

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An Intiative by Sri Chaitanya

a

v02

b

2v03

c

3v05

d

5v07

answer is B.

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Detailed Solution

By COAM, Mv0R=MvR+Icmω

Question Image

⇒Mv0R=MvR+MR22vR⇒v=23v0

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