[tex] \frac{F}{S}=E1* \frac{delta l1}{lo}=\ \textgreater \ \frac{delta l1}{lo}= \frac{F}{ \frac{S}{E1} } = \frac{F}{SE1}
[/tex]
[tex] \frac{F}{S}=E2* \frac{delta l2}{lo}=\ \textgreater \ \frac{delta l2}{lo}= \frac{F}{ \frac{S}{E2} }= \frac{F}{SE2} [/tex]
[tex] \frac{delta l1}{ \frac{lo}{ \frac{delta l2}{lo} } }= \frac{ \frac{F}{SE1} }{ \frac{F}{SE2} }=\ \textgreater \ \frac{delta l1}{delta l2}= \frac{E2}{E1}\ \textless \ =\ \textgreater \ 3= \frac{E2}{E1}=\ \textgreater \ E1/E2=1/3 [/tex]
Daca vrei sa iti apara rezolvarea trebuie sa fii pe un PC , pe telefon nu o sa iti apara
