Răspuns :
1). ρ = 2000kg/m³ = 2g/cm³
m = V·ρ = 51cm³·2g/cm³ = 102g = 0,102kg
Raspuns: d) 0,1kg
2). F = k·Δl =>
k = F/Δl = F : 0,01m = F × 100/1 N/m
Raspuns: b) 100N/m
m = V·ρ = 51cm³·2g/cm³ = 102g = 0,102kg
Raspuns: d) 0,1kg
2). F = k·Δl =>
k = F/Δl = F : 0,01m = F × 100/1 N/m
Raspuns: b) 100N/m