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A particle of mass $M$ is moving in a horizontal circle of radius $R$ with wiform speed $v$. When the particle moves from one point to a diametrically opposite point, its
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momentum changes by $2 M N$
Given, Velocity of particle $=v$
Change in momentum = final momentum - initial momentum $=M v-(-M v)=2 M v$
Change in momentum = final momentum - initial momentum $=M v-(-M v)=2 M v$
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