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Lucrul mecanic Puterea mecanica

Lucrul mecanic Puterea mecanica. Lucrul mecanic e o mărime ce caracterizează schimbarea stării dinamice a unui sistem. Unitatea de masura a lucrului mecanic este : Joule cu sombolul “J”.

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Lucrul mecanic Puterea mecanica

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  1. LucrulmecanicPutereamecanica

  2. Lucrulmecanice o mărime ce caracterizează schimbarea stării dinamice aunuisistem

  3. Unitatea de masura a lucruluimecaniceste: Joule cu sombolul “J” El depinde de cauza care produce schimbareastariidinamica a sistemului– forta – si de efectulacesteischimbari – deplasareasistemuluipe o anumitadistanta: L = F∙d

  4. Putereamecanicareprezintalucrulmecanicefecuat in unitatea de timp:P=L/tUnitatea de masura a puteriimecaniceeste watt-ul cu simbolul “W”Se maifolosestecalulputere. Un cal putere, prescurtatCPsauC.P.este o unitate de măsurăpentruputere, presupusă a fiegală cu putereamecanicăpe care estecapabil s-o furnizeze un cal1CP=736 W

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