Energia potentiala elastica se transforma in energie cinetica:
[tex]\dfrac{k\Delta l^2}{2}=\dfrac{mv^2}{2}[/tex]
Din ecuatia de mai sus, aflam repede viteza:
[tex]v^2=\dfrac{k\Delta l^2}{m}\\ \\ \\ v=\Delta l\sqrt{\dfrac{k}{m}}=0,05 \cdot\sqrt{\dfrac{20}{0,010}}=...[/tex]
