A liquid mercury filled U-tube manometer is used to measure the pressure at a point on the wing of a wind-tunnel model. One side of the manometer is connected to the model, and the other side is open to the atmosphere. Atmospheric pressure and the density of the liquid mercury are given as 0.95 x 10^5 N/m^2 and 1.36 x 10^4 kg/m^3, respectively, and gravity is 9.81 m/s^2. Required:
What is the displacement of the two columns of liquid mercury when the pressure on the wing is 0.72 x 10^5 N/m^2