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Two blocks A and B of mass 2m and m resp...

Two blocks `A` and `B` of mass `2m` and `m` respectively are connected to a massless spring of force constant `K` as shown in figure `A` and `B` are moving on the horizontal frcitionless surface with velocity `v` to right with underformed spring. If `B` collides with `C` elastically, then maximum compression of the spring will be

A

`sqrt((2m)/(3K))v`

B

`sqrt((m)/(K))v`

C

`sqrt((4m)/(3K))v`

D

`sqrt((5m)/(3K))v`

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