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A block of mass M on a horizontal smooth...

A block of mass M on a horizontal smooth surface is pulled by a load of mass `(M)/(2)` by means ofa rope AB and string BC as shown in the figure-2.165. The length & mass of the rope AB are L and `(M)/(2)` respectively and BC is massless. As the block is pulled from AB= L t oAB = 0 its acceleration changes from :

A

`(3g)/(4)` to g

B

`(g)/(4)` to `(g)/(2)`

C

`(g)/(4)` to g

D

`(3g)/(2)` to 2g

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The correct Answer is:
B
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