A body having volume $V$ and density $\rho$ is attached to the bottom of a container as shown. Density of the liquid is $d( > \rho )$. Container has a constant upward acceleration $a.$ Tension in the string is
Diffcult
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Note that the acceleration has an effect on both upthrust and weight
Weight experienced by the mass $=\rho V(g+a)$
Upthrust experienced by the mass $=d V(g+a)$
Tension experienced by the string $=U{p t h r u s t}-Weight$
$=V(g+a)(d-\rho)$
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