If the container filled with liquid gets accelerated horizontally or vertically, pressure in liquid gets changed. In liquid for calculation of pressure, effective \( g \) is used. A closed box with horizontal base \( 6 \mathrm{~m} \) by \( 6 \mathrm{~m} \) and a height \( 2 \mathrm{~m} \) is half filled with liquid. It is given a constant horizontal acceleration \( g / 2 \) and vertical downward acceleration \( g / 2 \).
Water pressure at the bottom of centre of the box is equal to (atmospheric pressure \( =10^{5} \mathrm{~N} / \mathrm{m}^{2} \), density of water \( =1000 \) \( \left.\mathrm{kg} / \mathrm{m}^{3}, g=10 \mathrm{~m} / \mathrm{s}^{2}\right) \)
(1) \( 1.1 \mathrm{MPa} \)
(2) \( 0.11 \mathrm{MPa} \)
(3) \( 0.101 \mathrm{MPa} \)
(4) \( 0.011 \mathrm{MPa} \)
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