2015-2-5第1章流体流动1 第3讲: 1.3流体流动中的守恒原理 2、机械能守恒(conservationofmechanicalenergy) 机械能衡算式的应用 3、动量守恒(conservationofmomentum) 1.4流体流动的内部结构(interiorstructure) 1、流体流动类型与雷诺准数(Reynoldsnumber) 2、边界层(boundarylayer)的形成与脱体 3、流体在圆管内流动...
8 . 5 Conservation of Mechanical EnergyMotion, Simple HarmonicPendulum, Nose BasherPendulum, Stopped
Conservation of Mechanical Energy(机械能守恒).pdf,Conservation of Mechanical Energy We have seen: W U − U Conservation of Mechanical Energy: 1→2 1 2 But, The SUM of ALL Potential and Kinetic energies remains constant. K + W K 1 1→2 2 Implies, •
8.机械能守恒定律(8.lawofconservationofmechanicalenergy)8.lawofconservationofmechanicalenergyDiscussion1.themovementsofthefollowingthreegroupsofobjects(1)therearetwoidenticalballs,AandB,atthesameheight.AsshowninFig.5-8-1,theAballisreleasedbystaticintheabsenceofresistance,andtheBballisreleasedatrestwitha...
Mechanicalenergy8-4ConservationofMechanicalEnergyPrincipleofconservationofmechanicalenergyExample:pendulumswing,andthesystemiscomposedbypendulumandtheEarthSampleProblemProblem:achildofmassmisreleasedfromrestatthetopofawaterslide,atheighth=8.5mabovethebottomoftheslide.Assumingthatslideisfrictionless,findthechild’sspeedat...
1. from the conservationpoint of viewThe potential energy surfaceof a certain plane is zero. If there is a spring, the elastic potential energyis zero when the spring is at its original length, and the mechanical energy atthe end of the system is equal to the mechanical energy of the ...
Nature of Energy ENERGY motion of electric charges bonding of atoms motion of objects internal motion of particles changes in the nucleus The ability to cause change. MECHANICAL ELECTRICAL CHEMICAL NUCLEARTHERMAL joules (J) An Energy Analogy If you had $1000, you could put it in your wall...
...能彼此之间可以相 互转换,而且其总和不变」,此称为力学能守恒(conservation of mechanical energy)。 www.docin.com|基于3个网页 3. 力学能守恒原理 新增网页2 ... Mechanical energy 力学能Conservation of mechanical energy力学能守恒原理The work–energy theorem 功–能 … ...
2.This article analyses the meaning and prerequisite ofconservation of mechanical energy, and poses different standpoints on describing the law ofconservation of mechanical energyin some textbooks.分析了机械能守恒的内涵及条件 ,对有的教材关于机械能守恒定律的表述提出了不同的见解。
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