Question

daca o carte cantareste 200g aflati normala

Answer 1

G=N

G=m×g

m=200g=0,2kg

g=10×$\frac{N}{kg}$

G=0,2kg × 10×$\frac{N}{kg}$

G=0,2×10N

G=20N

G=N

=>N=20N



G-greutatea corpului
g-accelaratia gravitationala
m-masa corpului
N-normala (sau newtoni, depinde de context)