Solution: For water, let Y = 0.073 N/m, contact angle θ = 0°, and γ = 9790 N/m3. After correcting for surface tension, estimate the applied pressure in Pa. When a pressure is applied, water at 20☌ rises into the tube to a height of 25 cm. 2.3 A vertical clean glass piezometer tube has an inside diameter of 1 mm. 2.1 can also be solved using Mohr’s circle. Fluid Mechanics, Fifth Edition xySolve for (25)/0.866 (a)Ans.σ = − − ≈ − 2289 lbf/ft In like manner, solve for the shear stress on plane AA, using our result for σxy: t,AA AAF L (2000 cos30 289sin 30 )L sin 30 (289cos30 3000sin 30 )L cos30 0 τ∑ = − ° + ° ° + ° + ° ° = AASolve for 938 1515 (b)Ans.τ = − ≈ − 2577 lbf/ft This problem and Prob.Solution: Sum forces normal to and tangential to AA in the element freebody above, with σn(AA) known and σxy unknown: n,AA xy xy F 2500L ( cos30 2000sin30 )Lsin30 ( sin30 3000cos30 )L cos30 0 σ σ ∑ = − ° + ° ° − ° + ° ° = 72 Solutions Manual Compute σxy and the shear stress on plane AA. (b)Ansτ ≈ 2683 lbf/ft 2.2 For the stress field of Fig. Now sum forces normal and tangential to side AA. Solution: Make cut “AA” so that it just hits the bottom right corner of the element. P2.1, let xx y圓0 psfσ σ= xy 500 psfσ = Find the shear and normal stresses on plane AA cutting through at 30°. Pressure Distribution in a Fluid 2.1 For the two-dimensional stress field in Fig.We now consider work.Download Fluid Mechanics Chapter 2 and more Numerical Methods in Engineering Cheat Sheet in PDF only on Docsity! Chapter 2 We summarize these findings in the following theorem.
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