Question

A closed rectangular tank is completely filled with water and is accelerated horizontally with an acceleration $a$ towards right. Pressure is (i) maximum at, and (ii) minimum at

• A. (i) B (ii) D
• B. (i) C (ii) D
• C. (i) B (ii) C
• D. (i) B (ii) A

Answer 1

Answer: (A)

(i) B (ii) D

Let mass be $m$ and area of cross section be $A$

Consider $Fig.1$, Equilibrium condition
$(P_2-P_1)A=mg=>P_2>P_1-----\left(1\right)$

Consider $Fig.2$, Applying Newton law considering acceleration '$a$' rightward
$(P_2-P_1)A=ma=>P_2>P_1-----\left(2\right)$
Moving downward left increases pressure,so point 'B' has maximum pressure.
Moving upward right decreases pressure,so point 'D' has minimum pressure.