exoph19

‫ ع شاندي‬:‫ذ‬

-I

 (O , i ) X

m

x  f (t ) T 02  f (m )

  v 0  v 0 i

X

m

T0

' X m' 

mv 02  X m2 K

X v 0  0, 2m .s 1  f

 dx  f   i dt



X

X

Em

E pe

dx dt Ec

dE m dt



' m

' m

'

m

d 2x dx m 2   Kx  0 dt dt Em

r=5cm 1

J  '  1.55.10 kg .m

2

Δ

m 



rad 18 Abdelatif Chandi_Lycée oued eddahab_Tiflet

-II

 

10mgr  0 J '

 0

v0 AH 

L 3 0

cos  1 



2

sin   

2

  J  '

T  T0  T0'

r k g m

T0' T0

5

K=50N.m-1 O





"

rad

6 3

20

J

" 

 1,25.102 kg.m2 " 1 6 2 6 (t=0)

Abdelatif Chandi_Lycée oued eddahab_Tiflet