水力学答案.docx

水力学答案一、1、液体抵抗剪切产生的力2、=pg；1×103kgm33、质量力；重力；表面力；压力4、拉格朗日；欧拉；拉格朗日；欧拉5、h>h26、平动；转动；角变形；线变形7、A、B;B;A、B;A二、×××××××三、DCDDD四、1、绝对压强：pA=p+7-zy=98+133×O.1+1×O.2=111.5kpa相对压强：区='一“=!1098-.381x9.8A八d、d22、尸=PCA=y(+,)7=9.8×(2+0.5/2)×3.14×0.524cCId7V2z,d、d2(h+-)-243、T/52.51x10-3300_11=(一西)×0=551w3.14×-×55.1844V*U-又H=一+h=一+K(1+5%)=5.92m2g为4、Q=AiV1=A2V2Q_A20×1033.14×0.152=3ms=4.52"zs17Q20×103匕=7A21_1.0.075223.14×4又P1+v'-P2+v2pg2gPg2gy,2_2I1Q2_4S?2p2=p1+(I22)0-20.85x1()4+2XIX1o?=196.2x1()3p,A1-Fa=p(0-V1)OI52Fx=p.A+pQV=205.8×3.14×-y-+1×20×103×1.13=3.66Fy=p2A2+pQV2=196.2×3.14×°5+1×20×103×4.52=0.96R=dF；+F；=3.78ZN5、A=S+"7)%=(34+1.5x1.5)x1.5=54.375机22-1+w2h+b=2xV1+1.52+34=37.6帆/?=A=54375=145wC1£>1/6C=-Kn37.61.45,z6=35.46加n/$0.03Q=54.375×35.46×,1.45×=28.80/疗/sQ28.80.q.n.V=0.53m/s>0.5m/sA54.375不淤