[tex]Se~da:\\ \\
m=0,05kg\\ \\
t=1s\\ \\
k=0,025 \frac N{mm}=25\frac Nm\\ \\
V=0,0064cm^3=6,4\times 10^{-9}m^3\\ \\
v=?\frac ms\\ \\
\rho=?\frac {kg}{m^3}\\ \\ \\
Formule:\\ \\
v=\frac {\Delta l}{t}\\ \\ \\
F_{el}=k\times \Delta l\\ \\
G=k\times \Delta l\\ \\
m\times g=k\times \Delta l\\ \\
\Delta l=\frac{m\times g}k[/tex]
[tex]v=\frac{m\times g}{k\times t}\\ \\ \\
\rho=\frac mV\\ \\ \\
Calcule:\\ \\
v=\frac{0,05\times 10}{25\times 1}=0,02\frac ms\\ \\
\rho=\frac{0,05}{6,4\times 10^{-9}}=7812500\frac{kg}{m^3}\\ \\ \\
Ca~sa~aflii~materialul,~te~uiti~in~tabel~ce~material~are:\\ \\
\rho=7812500\frac{kg}{m^3}
[/tex]
