Feso'ota'iga a Gurumuda
Angular momentum The quantity of the rotational motion, which is identical to mass (m) in the linear motion, is the moment of inertia (I). The quantity of the rotational motion, which is identical to the velocity (v) in the linear motion, is the angular velocity (ω). Thus, the rotating object has angular momentum that can … faitau atili
Review a rotating particle. The particle with mass m is given the force F so that the particle rotates about the axis O. The particle is r apart from the axis of rotation. First, the particle is in rest (v = 0). After moved by the force of F, the particles move with a certain speed so that the particles have tangential acceleration. The relationship between force (F), mass (m), and the tangential acceleration of particles are expressed by equation 3:
I totonu o se aveta'avale e pei o le kopa, e iai ni eletise e fealua'i fa'afuase'i i le saoasaoa maualuga ma le saoloto ae e le sola ese mai le u'amea. O eletise e mafai ona fealua'i saoloto e ta'ua o eletise saoloto. E ui o eletise e fealua'i saoloto i itu uma, ae leai se tafe atoa o eletise i se itu patino. E tupu lenei tulaga pe a leai se eseesega o le gafatia i le va o pito e lua o le uaea kopa.
A fa'apipi'i le uaea i se puna eletise, e tula'i mai se eseesega o le gafatia i le va o pito e lua o le uaea kopa, o lea e aliali mai ai se fanua eletise i totonu o le uaea kopa. O le iai o se fanua eletise e mafua ai ona oo i ai eletise saoloto le malosi eletise F = q E = e E, lea o le F = malosi eletise, e = le totogi o le eletise, E = eletise eletiseO lenei malosiaga eletise e mafua ai ona faatelevaveina faatasi eletise uma o loʻo fealuaʻi saoloto, lea e tutusa le itu ma le malosiaga eletise.
Le faʻauiga o malosi o se masini e teu ai le eletise ma le malosiaga eletise. O le capacitor faigofie e aofia ai ni papatusi po'o ni pepa e lua e tu'u fa'atasi ae le pa'i le tasi i le isi ma e vaeluaina e se insulator po'o se vacuum. O conductors o mea ia e mafai ona fa'atautaia le eletise e pei o u'amea, ae o insulators o mea ia e le mafai ona fa'atautaia le eletise e pei o palasitika.
I le taimi muamua, e le o ni eletise e molia ai pe leai foi ni eletise e lua. Ina ia mafai ona molia lelei le tasi avetaavale ae o le isi avetaavale e molia leaga, e tatau ona i ai se fesiitaiga o eletise mai le tasi avetaavale i le isi. O eletise o loo i luga o le fogāeleele o le atomu, o lea e faigofie ai ona gaoioi. A uma ona siitia le eletise mai le tasi avetaavale i le isi, o le tasi o avetaavale e sili atu lona malosi nai lo le uʻamea (leai o ni proton)
ina ia maua ai se totogi leaga, ae o le isi aveta'avale e iai le le lava o le eletise (sili atu le proton) ina ia maua ai se totogi lelei. O se fa'amatalaga auiliili o le fa'agasologa o le fa'atumuina o totogi eletise i luga o capacitors o lo'o toe iloiloina i le autu o le teuina o le malosiaga eletise i totonu o capacitors.
O le gafatia eletise ua fa'amatalaina o le malosiaga eletise i le iunite totogi. Fa'apea a o'o i le tulaga a, o le totogi q e tutusa le malosi o le eletise ma le EPa, ona fa'atulaga lea o le gafatia eletise i le tulaga a e pei ona taua i lalo:
V = malosiaga eletise, EP = malosiaga eletise, q = avega eletise
E lē gata o le tulaga a o iai le V ae fa’apea fo’i i tulaga uma o le fanua eletise. O le manatu a o se faʻataʻitaʻiga. E pei ona o le a faʻamatalaina mulimuli ane, e le faʻalagolago le V i le totogi q.
Before studying this topic, first understand work, the conservative forces, the relationship between the conservative forces with malosiaga ono, o le electric forces ma le eletise eletise.
In addition to the gravitational force and spring force, the other example of the conservative force is the electric force. To better understand why the electric force is called the conservative force, understand the following explanation.
Fanua eletise e ala i le totogi e tasi le togi
Ina ia fuafua le fanua eletise e gaosia e se tasi le totogi lelei, o le laasaga muamua o le filifilia lea o le fogāeleele Gauss e pei o se polo e tasi le lapo'a ma le radius r lea o lo'o i ai le ogatotonu o le polo i le totogi e tasi. O le lautele o le fogāeleele o le polo e 4πr2.
O le fanua eletise e sau mai le ogatotonu o le polo e ati atu i le itu sa'o o le fogāeleele o le polo ina ia maua ai le fua o le eletise e Φ = E A. O le fua o le tulafono a Gauss e Φ = Q/εo
E uiga i Tulafono a Coulomb, the force between electric charges has been studied. In a review of the electric field, another form of Coulomb’s law has been discussed, which is expressed by the equation F = q E,
where F is the electric force, q is the electric charge and E is the electric field. It can be said that Coulomb’s law is a law of physics that explains the relationship between the electric charge (q) and the electric field (E).
Gauss’s law is another physics law that explains the relationship between the electric charges and the electric fields. Gauss’s law was formulated by Carl Friedrich Gauss (1777-1855), a German theoretical physicist and mathematician.
Regarding the electric field, has been discussed the definition and equation of the eletise eletise which can be used to calculate the electric field strength produced by an electric charge, some electric charge or by an electric charge distribution. The calculation of the electric field strength produced by an electric charge or two electric charges is easily solved using the formula of electric field strength. If what is calculated is the electric field strength generated by an electric charge distribution, the calculation is more complicated if the formula for electric field strength is used, but it is easier to use Tulafono a Gauss. Before studying Gauss law in depth, first understood that electric flux because of the concept of electric flux used in Gauss law.
I le mataupu o le eletise, na aʻoaʻoina ai o eletise tutusa e teteʻe le tasi i le isi, ae o eletise e le tutusa e tosina le tasi i le isi. Afai e faalatalata atu se mea e iai le eletise lelei i se mea e iai le eletise leaga, e fetoʻai faatasi mea e lua ina ia agai atu le tasi i le isi. I se isi itu, afai e faalatalata atu se mea e iai le eletise lelei i se mea e iai le eletise lelei, ona teteʻe lea o mea e lua ina ia teʻa ese le tasi mai le isi. E pei ona suʻesuʻeina i le mataupu o le tulafono a Coulomb, e mafai e mea e iai le eletise ona faatelevaveina isi mea e iai le eletise ona o loʻo iai se malosiaga eletise o loʻo galue i le va o nei mea e iai le eletise. O le malosiaga eletise e faʻatinoina e se mea e iai le eletise i luga o isi mea e iai le eletise o se tasi lea o faʻataʻitaʻiga o se malosiaga e mafai ona galue e aunoa ma se fesootaʻiga. O le isi faʻataʻitaʻiga o le malosiaga e mafai ona galue i se mamao o le malosi o le kalave. O le malosi o le kalave e fa'atinoina e se mea tele i luga o isi mea tele.
