51.From a uniform circular disc of radius R , a circular disc of radius R/6 and having centre at distance R/2 from cente of the disc is removed . Centre of mass of remaining portion of disc is at (1) R/70 from disc Centre (2) R/35 from disc Centre (3)R/30 from disc Centre (4) R/40 from disc Centre

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Q. From a uniform circular disc of radius R, acircular disc of radius R/6 and having a centre at a distance R/2 from the centre of disc is removed. determine the centre of mass of the remaining portion of the disc.

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