Chapter 2 Practice Problems P 1 Differential Manometers

Chapter 2 Practice Problems

P 1: Differential Manometers p 1 Water p 2 h orifice h 1 3 h 2 Mercury Find the drop in pressure between point 1 and point 2.

P 2: Pressurized air Find pressure of air in the tank, if you know everything else!

P 3: Inverted manometer Find pressure difference between points A and B, created by the flow nozzle in the pipe.

P 4: Inclined manometer Find pressure difference between points A and B in the two pipes that are connected by the inclined manometer.

Problem 5: Using pressure prism concept calculate the magnitude of resultant force and its location on the gate at the inlet of the rectangular conduit O 8 m water q q = 36. 87˚ 12 8 m m hinge 4/cosq = 5 m Y axis h y 4 mx 4 m 4 m (rectangular conduit)

Problem 6: Compartments A and B of the tank shown in Figure are closed and filled with air and a liquid with a specific gravity equal to 0. 6. Determine the manometer reading, h, if the barometric pressure is 14. 7 psia and the pressure gage reads 0. 5 psi. The effect of the weight of the air is negligible.

Problem 7: A structure is attached to the ocean floor as shown in figure. A 2 -m diameter hatch is located in an inclined wall and hinged on one edge. Determine the minimum air pressure, p 1, within the container that will open the hatch. Neglect the weight of the hatch and friction in the hinge.

Problem 8: A 1 meter diameter cylindrical mass, M, is connected to a 2 meter wide rectangular gate as shown in the figure. The gate is to open when the water level, h, drops below 2. 5 meter. Determine the required value for M. Neglect friction at the gate hinge and the pulley.

Practice Problem 9 on Buoyancy Q)