Q4. Inclined Manometer pressure differences (20 marks) Determine the distance by which the mercury will move along the inclined leg of the mercury manometer of the figure below, if the pressure in pipe A is decreased by 10 kPa and the pressure in pipe B remains unchanged. The fluid in A has a SG of 0.9, the fluid in B is water and the fluid in between is mercury. Hint: Note that when PA decreases, the mercury column shifts by a distance 'a' along the incline to the left and decreases by the same distance 'a' in the vertical section to the right. The aim is to find this value of a. The new manometer configuration looks like the one shown below this diagram. -SG 0.9 Water 100 mm 3097 80 mm Bao 50 mm Mercury