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A trolley T of mass 5kg on a horizontal ...

A trolley T of mass 5kg on a horizontal smooth surface is pulled by a load of 2 kg through a uniform rope ABC of length 2m and mass 1 kg. As the load falls from `BC=0` to `BC=2m`, its acceleration (in `ms^(-2)`) changes from

A

`( 20)/( 6)` to `( 20)/( 5)`

B

`( 20)/( 8)` to `( 30)/( 8)`

C

`( 20)/(5) ` to `( 30)/( 6)`

D

4 to 5

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