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Q.

Consider a system of masses  M1 and  M2M1>M2 connected by a massless string.  In figure (A), the system is pulled by a force F  from the side of mass M1  and in figure (B), the system is pulled by the same force   from the side of mass M2, then

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a

acceleration of system in both cases is same but tension in the string in case (a) is more than in case (b)

b

acceleration of system in case (a) is more than in case (b) while tension in the string is same in both cases

c

acceleration in the two cases is same and tension in the string connecting   and   is also same.

d

acceleration of system in both cases is same but tension in the string in case (a) is less than in case (b)

answer is D.

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Detailed Solution

Both the masses will move with same acceleration,

a=FM1+M2

In case(A) tension= M2a

In case (B) tension= M1a

Since M1 > M2 tension in case(A) is less than the tension case(B)

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