Răspuns :
Lm=Fxvxt=55Nx5m/sx600s=165 000J
Lr=-165 000J
Lt=Lm+Lr=0J
AM FACUT TRANSFORMARILE v=18 000m/3600s=5m/s
t=10 min=600s
Lr=-165 000J
Lt=Lm+Lr=0J
AM FACUT TRANSFORMARILE v=18 000m/3600s=5m/s
t=10 min=600s