chap.py

Created on April 06, 2023

469 Bytes

Le travail d’une force peut être
moteur, 
resistant 
ou sans efficacités

W->ab(F)= FxABxcosa
= 1500x5000xcos20=7x106J
f:intensité de la force en Newton(N)
Ab:distance du déplacement en mètre (m)
A:angle orienté entre F et AB
Résultat en J 

W->ab(F)>0=travail moteur
W->ab(F)<0=le travail est resistant
cos90=le travail ne travaille pas

Puissance moyenne:
Force=mxg
wa->b(F)= FxAbxcosa
=2,94x104x12xcos0

Pmoy=Energie/duree
=W->ab/deltaT =...W

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