1.6.1 - Capillary Rise in Annular Tubes
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Practice Questions
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Define capillarity.
💡 Hint: Think about how water moves in a straw.
What role does surface tension play in capillary rise?
💡 Hint: Consider what happens at the surface of the water.
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Interactive Quizzes
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What primarily drives capillary rise?
💡 Hint: Consider what occurs at the surface of the liquid.
True or False: The angle of contact can affect how high a liquid rises in a tube.
💡 Hint: Reflect on the beading effect of water.
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Challenge Problems
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A glass tube has an outer diameter of 5 mm and an inner diameter of 3 mm. If the angle of contact is 30 degrees and the surface tension of water is 0.072 N/m, calculate the height of water rise.
💡 Hint: Substitute known values for \\(\\sigma\\), \\(\\phi\\), \\(D\\), \\(d\\), and gravitational acceleration.
Explain how increasing the inner diameter of an annular tube affects the capillary rise.
💡 Hint: Reflect on how the forces balance in larger tubes.
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