Question

Aflati greutatea unui corp cu densitatea de 800Kg/m³ si volumul de 8m³. Se considera g=10 N/Kg

Answer 1

m=δxV=800x8=6400kg
G=mxg=6400x10=64000N=64kN

Answer 2

$\rho=800 \ kg/m^3 \\ V=8 \ m^3 \\ g=10 \ N/kg \\ \boxed{G-?} \\ \bold{Rezolvare:} \\ \boxed{G=m \cdot g} \\ \boxed{\rho=\frac{m}{V}} \Rightarrow m=\rho \cdot V \\ m=800 \ kg/m^3 \cdot 8 \ m^3 \\ m=6 \ 400 \ kg \\ G=6 \ 400 \ kg \cdot 10 \ N/kg \\ \Rightarrow \boxed{G=64 \ 000 \ N}$