Răspuns:
delta l = 10cm = 0.01m
Epe = k × delta l² / 2
Epe = 1500N/m × 0.01m² / 2
(se simplifica 1500 cu 2 prin 2)
Epe = 750N/m × (1/100)²
Epe = 750N/m × 1/10000
(se simplifica 750 cu 10000 prin 250)
Epe = 3 × 1/40
Epe = 3/40 => 0.075 J
Sper ca te-am ajutat!
