Question

o forta de 30N,actionand in lungul unei resort,ii produce acestuia o deformare de 6 cm.ce valoare are o alta forta,care,actionand pe aceeasi directie,produce aceluiasi resort o deformare de 10 cm?...............vreau rezolvat..multumesc

Answer 1

[tex]F_{e}=F_{df.}\Rightarrow F_{e}=30~N. \\ F_{e}=K\cdot \triangle l_{1} \Rightarrow 30~N=K\cdot 6~cm\Rightarrow K=5 \frac{N}{cm}. \\ F_{e}=K\cdot\triangle l_{2}\Rightarrow F_{e}=5 \frac{N}{cm}\cdot 10~cm\Leftrightarrow \boxed{F_{e}=50~N.}[/tex]