Question

va rooggg ajutooor !asupra unui resort elastic actioneaza o forta de 35 N deformandu-l cu 25 cm .Care va fi alungirea resortului daca forta deformatoare este de 7N

Answer 1

[tex]F_1=K\cdot \Delta L_1 \Rightarrow K=\frac{F_1}{\Delta L_1}\\ F_2=K\cdot \Delta L_2\\ F_2=\frac{F_1}{\Delta L_1}\cdot \Delta L_2\\ \Delta L_2=\frac{F_2\cdot \Delta L_1}{F_1}\\ \Delta L_2=\frac{7 \cdot 25}{35}\\ \boxed{\boxed{{\Delta L_2=5 cm}}}[/tex]