Transcription of Chapter 2 Pressure Distribution in a Fluid
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Chapter 2 Pressure Distribution in a Fluid
Chapter 2 Pressure Distribution in a Fluid For the two-dimensional stress field in Fig. , let xxyy3000 psf2000 psf == xy500 psf = Find the shear and normal stresses on plane AA cutting through at 30 . Solution: Make cut AA so that it just hits the bottom right corner of the element. This gives the freebody shown at right. Now sum forces normal and tangential to side AA. Denote side length AA as L. AAn,AALF0(3000 sin 30 500 cos 30)L sin 30(2000 cos 30 500 sin 30)L cos 30 = = + + Fig. AASolve for. (a)Ans 22683 lbf/ft t,AAAAF0L (3000 cos 30 500 sin 30)L sin 30 (500 cos 30 2000 sin 30)L cos 30 == AASolve for.
2.3 A vertical clean glass piezometer tube has an inside diameter of 1 mm. When a pressure is applied, water at 20°C rises into the tube to a height of 25 cm. After correcting for surface tension, estimate the applied pressure in Pa. Solution: For water, let Y = 0.073 N/m, contact angle θ = 0°, and γ = 9790 N/m3. The
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