zakoni vrashatelnoy mexaniki

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powerpoint presentation zakoni vrashatelnoy mexaniki. kineticheskaya energiya dvijushegosya ob'ekta ️ 🐾 1. vrashatelnaya kinematika i dinamika 2. kineticheskaya energiya vrasheniya 3. sovmestnoe vrashenie i postupatelnoe dvijenie plan: teorema o parallelnix osyax teorema o parallelnix osyax: vichislyaet moment inertsii tela otnositelno lyuboy osi, znaya moment inertsii otnositelno tsentra mass i rasstoyanie mejdu osyami. formula: i = i cm + md², gde m — massa tela. primenima k lyubomu tvyordomu telu. uglovoe peremeshenie, skorost i uskorenie vtoroy zakon nyutona dlya vrasheniya: στ = iα. kineticheskaya energiya vrasheniya: 12,5 dj. soxranenie momenta impulsa kineticheskaya energiya dvijushegosya ob'ekta ravna ½mv². rotatsionnoe dvijenie, opisivaemoe zakonami nyutona, — vrashenie vokrug osi. krutyashiy moment (τ = rfsinθ), analog sili dlya vrasheniya, vizivaet uglovoe uskorenie (α = τ/i). uglovoe uskorenie maxovika (radius 0 primenenie vrashatelnoy mexaniki kineticheskaya energiya vrashayushegosya tela skladivaetsya iz postupatelnoy i vrashatelnoy sostavlyayushix. rotatsionnaya mexanika upravlyaet momentom impulsa (l=iω), vajnim dlya giroskopov (naprimer, v aerokosmicheskoy …

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vijushegosya avtomobilya: bolshaya, postupatelnaya; vrashatelnaya energiya kolyos — znachitelno menshe. kineticheskaya energiya vrashayushixsya tel kineticheskaya energiya (ke) katyashegosya ob'ekta (naprimer, sferi massoy 10 kg, katyasheysya so skorostyu 5 m/s po 30-gradusnomu sklonu v denvere) vklyuchaet postupatelnuyu ke (1/2mv²) i vrashatelnuyu ke (1/2iω²). kineticheskaya energiya dvijushegosya ob'ekta zavisit tolko ot massi i skorosti. teorema o perpendikulyarnix osyax kineticheskaya energiya dvijushegosya tela: ke t = ½mv² (postupatelnaya), ke r = ½iω² (vrashatelnaya). polnaya energiya (naprimer, katyashegosya kolesa) – summa obeix. rascheti momenta inertsii zakoni vrashatelnogo dvijeniya: analog vtorogo zakona nyutona — τ = iα (moment sili raven momentu inertsii, umnojennomu na uglovoe uskorenie). v sistemax s postoyannim vneshnim momentom sili soxranyaetsya moment impulsa (l = iω) raschet momenta inertsii (i) zavisit ot raspredeleniya massi; dlya sploshnogo tsilindra radiusa 'r' i massi 'm', i = (1/2)mr². teorema o parallelnix osyax smeshaet i na rasstoyanie 'd' ot tsentra mass: i = itsm + md² …

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v londone, v otlichie ot postupatelnoy kineticheskoy energii (½mv²) rabota i moshnost vrasheniya rabota vrasheniya (w) = τθ; moshnost (p) = τω; kineticheskaya energiya (ke) = ½iω²; vtoroy zakon nyutona (analog): τ = iα. moment sil otnositelno nepodvijnoy osi v pole zemli opisivaetsya τ = iα. kineticheskaya energiya vrasheniya (naprimer, maxovika, i = ½mr²) pri ω = 10 rad/s vichislyaetsya kak ke = ½iω² krutyashiy moment i moment inertsii moment inertsii (i, kg⋅m²) — eto soprotivlenie uglovomu uskoreniyu, zavisyashee ot raspredeleniya massi otnositelno osi vrasheniya. dlya tochechnoy massi (m) na rasstoyanii (r) on raven mr². teorema o parallelnix osyax pozvolyaet vichislit i otnositelno raznix osey kineticheskaya energiya vrashayushegosya tela: ke = ½iω². postupatelnaya: ke = ½mv². katyasheesya telo imeet obe. zakon soxraneniya energii primenim v zamknutix sistemax. svyaz lineynix i uglovix velichin lineynaya skorost (v) svyazana s uglovoy skorostyu (ω) kak v = rω; vtoroy zakon nyutona dlya vrasheniya: στ …

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renie igraet klyuchevuyu rol, vliyaya na uskorenie spasibo za vnimanie @taqdimot_robot image3.png image4.jpg image5.jpg image6.jpg image7.jpg image8.jpg image9.jpg image10.jpg image11.jpg image12.jpg image13.jpg image14.jpg image15.jpg image16.jpg image17.jpg image18.jpg image19.jpg image20.jpg image1.png

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powerpoint presentation zakoni vrashatelnoy mexaniki. kineticheskaya energiya dvijushegosya ob'ekta ️ 🐾 1. vrashatelnaya kinematika i dinamika 2. kineticheskaya energiya vrasheniya 3. sovmestnoe vrashenie i postupatelnoe dvijenie plan: teorema o parallelnix osyax teorema o parallelnix osyax: vichislyaet moment inertsii tela otnositelno lyuboy osi, znaya moment inertsii otnositelno tsentra mass i rasstoyanie mejdu osyami. formula: i = i cm + md², gde m — massa tela. primenima k lyubomu tvyordomu telu. uglovoe peremeshenie, skorost i uskorenie vtoroy zakon nyutona dlya vrasheniya: στ = iα. kineticheskaya energiya vrasheniya: 12,5 dj. soxranenie momenta impulsa kineticheskaya energiya dvijushegosya ob'ekta ravna ½mv². rotatsionnoe dvijenie, opisivaemoe zakonami nyutona, — vrashenie vokrug os...

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