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Rezolvati-mi problemele astea: Dau coronita

Densitatea= 2.7 g/cm cub
V=18 cm cub
g=10 N/kg

m=?
G=?
Fd=?
K=?


m=300g
g=10 N/kg
delta l= 2 cm
G=?
Fd=?
K=?


Răspuns :

G=m*g
m=300g=>m=0,3kg
G=0,3kg*10N/kg
G=3N

Fd
=K*delta l
Fd=G=3N
K=[tex] \frac{Fd}{Dl} [/tex]
K=[tex] \frac{3N}{2cm} [/tex]
K=1,5N/cm

Raspunsuri;
G=3N
Fd=3N
K=1,5N/cm