Question

A cuboid $(a\times a\times 2a)$ is filled with two immiscible liquids of density $2\rho$ and $\rho$ as shown in the figure. Neglecting atmospheric pressure, the ratio of force on base and side wall of the cuboid is:

• A. $2:3$
• B. $1:3$
• C. $5:6$
• D. $6:5$

Answer 1

The correct option is A $2:3$

pressure on the base= dga+2dga=3dga

pressure on the side wall= (0+dga)/2 + (dga+2dga)/2=2dga

ratio 2dga:3dga=2:3