Question

calculati presiunea pe care o exercitati asupra podelei stiind ca masa =69 acceleratia gravitationala =9,81 s/m2 suprafata =400cm2​

Answer 1

$m=69 \ kg \\ \vec{g}=9,81 \ m/s^2 \\ S=400 \ cm^2=0,04 \ m^2 \\ p=\frac{\vec{F}_e}{S}; \\ \vec{F}_e=\vec{G}=m\vec{g}=69 \ kg \cdot 9,81 \ m/s^2 \\ \Rightarrow \vec{F}_e=676,89 \ N \\ \Rightarrow p=\frac{676,89 \ N}{0,04 \ m^2} \\ \Rightarrow \boxed{p=16 \ 922,25\ Pa=\bold{16,992 \ kPa}}$