Răspuns:
a)
G = m×g
335N = m×10N/kg
m = 335N/10N/kg
= 33.5 kg
b)
Ce greutate avea inainte ?
33.5kg - 1.5kg = 32 kg
a)
V = l³ = (1dm)³ = 1dm³ = 1000 cm³
b)
ρ = m/V => m = ρₓV
= 2.7g/cm³ₓ1000cm³
= 2700 grame
= 2.7 kg
c)
G = mₓg
= 2.7kgₓ10N/kg
= 27 N
d)
Fe = kₓΔl
Fe = G =>
G = kₓΔl =>
Δl = G/k
= 27N/90N/cm
= 0.3 cm
= 3 mm
