Engineering Board Exam Reviewer · Fluid Mechanics · medium

What is the capillary rise of water in a clean glass tube 1 mm in diameter? ( = 0.0728 N/m, contact angle = 0°)

  1. 14.8 mm
  2. 29.7 mm
  3. 59.4 mm
  4. 3.0 mm

Answer

B. 29.7 mm

Solution

h = 4 /( d) = 4(0.0728)(1)/[9810(0.001)] = 0.0297 m = 29.7 mm.

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