A gas is connected to an open-end manometer containing a liquid of relative density 0.85. The atmospheric pressure is 96 kPa and the level difference is 55 cm as shown. Find the gas pressure. Image
Physics · Fluid Mechanics
JEE Mains Advanced

Question

A gas is connected to an open-end manometer containing a liquid of relative density 0.85. The atmospheric pressure is 96 kPa and the level difference is 55 cm as shown. Find the gas pressure. Image

G1 Physics · Accepted Answer

Step 1: Use hydrostatic equilibrium, P₂−P₁ = ρgΔh; in an accelerating fluid replace g by the effective acceleration where required. Step 2: Equate pressures at the same horizontal level or integrate pressure over the stated surface. Applying these relations to the given data gives 100.6. Final answer: 100.6.