When the fluid element of mass m is going up vertically with an acceleration a then buoyant force resulted on it is

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When the fluid element of mass m is going up vertically with an acceleration a then buoyant force resulted on it is

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$B = m g$

$B = (a \pm g)$

$B = m (a + g)$

$B = m (a - g)$

answer is B.

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Detailed Solution

Here we are given a fluid element P of mass = m

Moving up with acceleration = a

Utilizing buoyant force = B

Then we can have F.B.D of fluid element.

$B - m g = a$

$B = m (g + a)$

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