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 :

Options

A. same for `O_(1)` and `O_(2)`
B. greater for `O_(1)` and `O_(2)`
C. greater for `O_(2)` than `O_(1)`
D. data is not sufficient

Answer

A

Explanation

Buoyant force `= F_(b) = V_("sub"). rho_(l) . g`
where, `V_("sub") , rho_(l)` and `g` all are same w.r.t. `O_(1)` and `O_(2)`
Hence `(A)`