2.2.3. Learning Fluid Mechanics

Try these first

1. 1.

   Define surface tension.

   Hint

   Think about how small objects can float on the surface of water.

2. 2.

   What is capillarity?

   Hint

   Consider how a paper towel absorbs water.

3. 3.

   What is the primary factor causing liquid to rise in a capillary tube?

   • Gravity
   • Surface Tension
   • Fluid Weight

   Hint

   Consider forces acting on the liquid in a tube.

4. 4.

   True or False: The diameter of a tube affects the height to which a liquid can rise due to capillarity.

   • True
   • False

   Hint

   Think about your experiences with straws.

5. 5.

   A thin glass column is used to measure the height of water (surface tension = 0.0728 N/m). The diameter is 2mm. Calculate the height to which water will rise in the column.

   Hint

   Convert diameter to radius and ensure unit consistency.

6. 6.

   In a situation where two different liquids are involved, how would you approach calculating the equilibrium height in a shared capillary tube?

   Hint

   Start by establishing the individual contributions of both fluids before combining them.