水力学答案.docx

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1、水力学答案一、1、液体抵抗剪切产生的力2、y = pg； 1 X 103kg/m33、质量力；重力；表面力；压力4、拉格朗口；欧拉；拉格朗口；欧拉5、hih26、平动；转动；角变形；线变形7、A、B; B; A、B; A二、XXXJXJJXXX三、DCDDD四、1、绝对压强:pA = pa +/Tz-zy=98+133X0.1+lX0.2=111.5kpa相对压强：匚Jll-98 = 38pg Pg 1x9.8l八 d、 d：2、F = pc - A = /(/2 + )-r =9.8 X (2+0.5/2) X3.I4X 0.52/47i ,d、47 d 4 23、ka= /? + - +

2、-2 d、 d224,(52.51x10-300L = (1Y x = 5.51m0.22023.14xXx55.1844v2v2又 H = + h =+ /zz (1 + 5%) = 5.92/772g2g4、Q = AlVi=A2V24v20x10-3I A 3.14xW= A3m! s“Q20x10-3匕=4.52m/ sA2I q m 0.0752213.14x4又红+=正+丘Pg 2g pg 2gy 2 _ t/2i 132 _ 4 5? 2p? = p、+(Mx? = 20.85 xl04+-xlxlO3 =196.2xl0304工=P。(0 匕)n 152F、= pA+pQV =

3、205.8 x 3.14x- +1 x20xIO-3 x 1.13 = 3.66Z:7V()025 2Fv = p2A2 + pQV2 =196.2x3.14x- + 1x20x10-3 x4.52 = 0.96R =+ F; = 3.78ZN5、Q = AcyRiA = 0 + 77i/z)/? = (34 + 1.5xl.5)xl.5 = 54.375 m2% 2y11 + m2 + b = 2 x V1 +1.52 +34 = 376n/?=A = 54375 =1 45mZ 37.6c = -Ri/b = 1.45l/6 =35.46m,/2/5n 0.030 = 54.375 x 35.46x J1.45x一 = 28.80J/sV 6500Q 28.80 八/ 八v = = 0.53m/5 0.5m/ sA 54.375不淤