A block is partially immeresed in a liqu...

A block is partially immeresed in a liquid and the vessel is accelerating upwards with an acceleration 'a'. The block is observed by two observers `O_1` and `O_2`, one at rest and the other accelerating with an acceleration 'a' upward. The total buoyant force on the block is :

same for `O_(1)` and `O_(2)`

greater for `O_(1)` than `O_(2)`

greater for `O_(2)` than `O_(1)`

data is not sufficient

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