Q.

A solid sphere is sliding with a velocity V0  on a rough horizontal surface. Its velocity when it starts pure rolling is

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a

57v0

b

27v0

c

v014

d

5v014

answer is A.

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Detailed Solution

By conservation of angular momentum mv0r=Iω  +  mvrmv0r=25mr2ω  +  mvrv0=25rω  +  v=75v               v=rωv=5v07
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