Question

A cubical open vessel of side $5m$ filled with a liquid is accelerated with an acceleration a. The value of a so that pressure at mid point $M$ of $AC$ is equal to pressure at $N$ is:

• A. $g$
• B. $2g$
• C. $g/2$
• D. $2g/5$

Answer 1

Answer: (B)

$2g$

$P_N+\rho gh-\rho a\left(\frac{h}{2}\right)=P_M$
But $P_N=P_M$
$\therefore$ $a=2g$