Two blocks A and B of masses 2m and m, respectively are connected by a massless and inextensible string. The whole system is suspended by a massless spring as shown in the figure. The magnitudes of acceleration of A and B immediately after the string is cut, are respectively

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g, g 2

g2,g

g, g

g2,g2

answer is B.

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Detailed Solution

Acceleration of B = g∵mas=mg⇒as=g For block A 2maA=mg acceleration of A is aA=g/2 aA=g/2