Question

A closed enclosure contains an ideal gas. The pressure exerted by gas is same at all points inside enclosure. The enclosure is given an acceleration (uniform) in horizontal direction. The pressure in compartment now is

(1) same everywhere

(2) lower in front side

(3) lower in rear side

(4) lower on upper side

Answer 1

(2) lower in front side

Due to acceleration of compartment there is ficticous force an atoms / molecules of gas directed towards rear of enclosure. Therefore pressure of gas is more at rear of enclosure or equivalently we say pressure is lower in the front side of container.