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[" Q."3" If linear density of a rod of l...

[" Q."3" If linear density of a rod of length "3m" varies as "lambda=2+],[" them the position of the centre of gravity of the rod is "],[[" (a) "(7)/(3)m," (b) "(12)/(7)m],[" (c) "(10)/(7)m," (d) "(9)/(7)m]]

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