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150. A cylinder of mass M and radius r is mounted on a frictionless axle over a well. A rope of negligible mass is wrapped around the cylinder and a bucket of mass m is suspended from the rope. The linear acceleration of the bucket will be

(a)  Mg/M+2m

(b)  2Mg/m+2M

(c)  Mg/2M+m

(d) 2mg/M+2m

Ans. d

(85)

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