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In figure shown the spring constant is K...

In figure shown the spring constant is `K`. The mass of the upper block is `m` and that of the lower block is `3m`. The uper block is depressed down from its equilibrium position by a distance `delta` and released at `t=0`.

A

If `v_(A)gtv_(B)` then for reaching the other bank simultaneously `theta_(A) gt theta_(B)`

B

In case (A) drift of boat A is greater than boat B

C

If `v_(B)gtv_(A)` and `theta_(A)gt theta_(B)`, boat B reaches other bank earlier than boat A

D

If `v_(B)=v_(A)` and `theta_(A)gt theta_(B)` drift of A is greater.

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