Question

masa=750g
k(constanta)=100 N/m
g=10 N/m
Delta L=?
Fe(Forta Elastica)=?
G=?
Va rog rapid,dau 5 stelute si marchez ca cel mai bun raspuns si dau 13 puncte

Answer 1

$m=750 \ g=0,75 \ kg \\ g=10 \ N/kg \\ k=100 \ N/m \\ \boxed{\Delta l-?} \\ \bold{Rezolvare:} \\ \boxed{k=\frac{F_e}{\Delta l} } \\ \Rightarrow \Delta l=\frac{F_e}{k} \\ F_e=G=m \cdot g \\ F_e=G=0,75 \ kg \cdot 10 \ N/kg \\ F_e=7,5 \ N \\ \Delta l=\frac{7,5 \ N}{100 \ N/m} \\ \Rightarrow \boxed{\Delta l=0,075 \ m=7,5 \ cm}}$