méca 2 Flashcards

1
Q

W(vectP)=

A

-mgh

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2
Q

Travail de la force de rappel d’un ressort:

w(vectF)=

A

-1/2kx^2

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3
Q

Théorème de l’énergie cinétique:

A

deltaEc= 1/2mv(f)^2 - 1/2mv(i)^2 = Somme du travail des forces

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4
Q

energie potentielle

A

deltaEp= Ep1-Ep2= - somme du travail des forces

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5
Q

énergie mécanique

A

Em=Ec+Ep

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6
Q

puissance:

A

P= E/t
p en W
E en J
t en s

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