enepui.py

Created by condouarthur

Created on March 09, 2022

788 Bytes


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Puissance de F à M : F.v(M)
P=dE/dt
P=O -> force passive
P>O -> F et v sont dans le même sens
P<O -> F et v sens contraire

f=-hv
déplacement élémentaire :
dxex+dyey+dzez
drer+d0e0+dzez

travail : δW=Pfdt=f.dOM
si δw>O ->moteur
si δw<O ->résistant
si δw=O ->passif

transfert d'énergie :
Intégrale de A à B du travail

TPC : dEc/dt=P(Fr)
TEC : dEc=travail de Fr =>>delta Ec=W(Fr)

Si Fr=O->Ec=O donc v cste
Si Fr motrice -> delta Ec>O donc v augmente

dEp(M)=intégrale travail de Fc sans borne
W(Fc)=-deltaEp
P(Fc)=-dEp/dt
Fe=qoq/4piepsilon0*r^2

Epp(pesanteur)=mgz
Epg(gravitationelle)=-Gmom/r
Epk(élastique)=1/2k(l-lo)^2

TPM : dEm/dt = somme(force nc)
     Em=Ec+somme Ep
TEM : somme(travail force nc)

équilibre : dEp/dt=0 F(xeq)=dEp/dt

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