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A balloon with its contents weighing 240N  is moving down with an acceleration of g/2  ms−2 . The mass to be removed from it so that the balloon moves up with an acceleration of g/3    ms−2  is

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a

15kg

b

10kg

c

6kg

d

3kg

answer is A.

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Detailed Solution

mg−FB=mg2   ------(1)FB−(m−x)g=(m−x)g3  --------(2)Solving (1) & (2)x=58m=58×24=15kg
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