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14. P Q R PQR IS a composite rod having a uniform cross-section but with portions PQ and QR made of dtffetent matenals. each ofunifonn

14. P Q R PQR IS a composite rod having a uniform cross-section but with portions PQ and QR made of dtffetent matenals. each ofunifonn density. The ratio of the length of PQ to that of QR is 2 : 3. When the rod IS suspended at Q. it remains horizontal as shown. What is the ratio of the mass of PQ to that of QR " 2:3 1:1 3'2 Answer cannot be found as the ratio of their densities is not given

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