Question

Stiind ca : delta l = 40 cm, K=0,1 N/metru, g=10 N/kg. Sa se afle m(masa corpului).

Answer 1

$\triangle l=40 \ cm=0,4 \ m \\ k=0,1 \ N/m \\ g=10 \ N/kg \\ \boxed{m-?} \\ \bold{Rezolvare:} \\ \boxed{k= \frac{F_e}{\triangle l} } \\ \boxed{G=m \cdot g} \\ \Rightarrow m= \frac{G}{g} \\ G=F_e \\ F_e=k \cdot \triangle l \\ G=F_e=0,1 \ N/m \cdot 0,4 \ m \\ G=0,04 \ N \\ m= \frac{0,04 \ N}{10 \ N/kg} \\ \Rightarrow \boxed{0.004 \ kg}.$