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Ask iit jee aieee pet cbse icse state board experts Discussion Response Post to: need sol of HC VERMA CHAPTER ROTATION Qno-37,63,50,69,60
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budku007 (396)

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Olaaa!! Perrrfect answer. 64  [102 rates]

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Apply Law of conservation of angular momentum about centre
we get
mvL/2=ML2,/12,as particle stops after collision
we get =6mv/ML             M is mass of rod,m is mass of particle,v is velocity of particle
as angular velocity is constant
apply theta=t
theta=/2
we get t=ML/12mv
now apply law of conservation of linear momentum
we get
mv=MV    V is velocity of centre of rod
V=mv/M
use s=Vt
we get s=mv/M*ML/12mv
we get s=L/12
answer
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