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19. A light string passing over a smooth light pulley connects two blocks of masses  m 1 and m 2  (vertically). If the acceleration of the system is g/8 then the ratio of the masses is

(a)  8 : 1                                    (b)  9 : 7

(c)   4 : 3                                    (d)  5 : 3

Ans. b

(8)

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