Q. A cubical block is floating in a liquid with half of its volume immersed in the liquid. When the whole system accelerates upwards with acceleration of $g/3$, the fraction of volume immersed in the liquid will be
A) $\frac{1}{2}$
B) $\frac{3}{8}$
C) $\frac{2}{3}$
D) $\frac{3}{4}$
Explanation
(a) Fraction of volume immersed in the liquid $V_{in} = \left( \frac{\rho}{\sigma} \right)V$
$i.e.$ it depends upon the densities of the block and liquid
So there will be no change in it if system moves upward or downward with constant velocity or some acceleration
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.