Question: A piston having a cross-sectional area of 0.40 m2 is located in a cylinder containing water as shown in the figure below. An open U-tube manometer is connected to the cylinder as shown. For h1 = 63 mm and h= 114 mm what is the value of the applied force, P, acting on the piston? The weight of the piston is negligible.
Solution:
Note: There is one mistake in solution. That is the unit of answer which we got is Newton (N) not N/m2