8.2.1. Definitions and Measurement

Try these first

1. 1.

   Define gauge pressure and how it differs from absolute pressure.

   Hint

   Remember the reference point for gauge pressure.

2. 2.

   Explain the significance of hydrostatic pressure in fluid mechanics.

   Hint

   Consider where you would see hydrostatic pressure in nature.

3. 3.

   Which type of pressure is measured relative to atmospheric pressure?

   • Absolute Pressure
   • Gauge Pressure
   • Vacuum Pressure

   Hint

   What does gauge refer to in this measurement?

4. 4.

   True or False: Hydrostatic pressure is constant across horizontal planes in a fluid at rest.

   • True
   • False

   Hint

   Think about how pressure behaves without movement.

5. 5.

   A liquid with a density of 850 kg/m³ is contained in a vertical cylinder 15 meters high. Calculate the pressure at the bottom of the cylinder.

   Hint

   Apply the hydrostatic formula at the bottom.

6. 6.

   Explain how altering the tube diameter affects liquid height in capillary action when using two different tubes.

   Hint

   Think about the balance between gravity and surface tension.