2.3.2. Flow Classification

Try these first

1. 1.

   Define upward force in your own words.

   Hint

   Think about forces acting in opposite directions.

2. 2.

   What role does surface tension play in fluid mechanics?

   Hint

   Consider how droplets behave.

3. 3.

   What determines the upward force in a fluid?

   • Pressure
   • Surface Tension
   • Temperature

   Hint

   Think about what keeps floating droplets stable.

4. 4.

   True or False: The downward force is always greater than the upward force in fluids.

   • True
   • False

   Hint

   Remember the condition for equilibrium.

5. 5.

   You have a capillary tube with a radius of 0.01 m. Calculate how high water will rise if the surface tension is 0.072 N/m and density is 1000 kg/m³.

   Hint

   Remember, density and acceleration due to gravity are involved.

6. 6.

   Consider a fluid system where the upward force is 1.5 N and the downward force is 1.2 N. What needs to occur for equilibrium?

   Hint

   Think about how forces can be adjusted.