meca24.py

Created by acrozak02

Created on January 17, 2021

669 Bytes

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determination de l'equation de 
la trajectoire

pour mouv champ pensanteur:
x=f(t)
t=x/v0*cos(alpha)
on remplace t dans l'expression
de y=g(t)
y=-1/2g*(x/v0*cos(alpha)^2)+v0*sin(alpha)*x/v0*cos(alpha)
la trajectoire du systeme est donc:
y=-(g/2(v0*cos(alpha)^2)*x**2+tan(alpha)*x

pour mouv champ electrique verticale:
x=f(t)
t=x/v0*cos(alpha)
on remplace t dans l'expression
de y=g(t)
y=q*E/2m*(x/v0*cos(alpha)^2)+v0*sin(alpha)*x/v0*cos(alpha)
la trajectoire du systeme est donc:
y=(q*E/2m*(v0*cos(alpha)^2)*x**2+tan(alpha)*x

calculer v0:
Em0=m*g*h+1/2m*v0**2 EmA=m*g*H carVa=0ms-1
m*g*h+1/2m*vo**2=m*g*H puis vo=racine 2g*(H-h)

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