Răspuns :
h=20 m
g=10 N/kg
Ep=6400 J
Ep=m•g•h
m=Ep/g•h
m=6400 J/10 N/kg•20 m
m=6400 kg/200
m=32 kg
g=10 N/kg
Ep=6400 J
Ep=m•g•h
m=Ep/g•h
m=6400 J/10 N/kg•20 m
m=6400 kg/200
m=32 kg
unitatea de masura pentru energie se numeste JOULE si se prescurteaza J
Energia potentiala = masa x g x h
unde g = acceleratia gravitationala = 9,8 N/kg ≈ 10 N/kg
h = inaltimea in metri
m = Ep / ( g x h) = 6400 J / ( 10 N/kg x 20 m) = 6400 J / 200 Nm/kg = 32 kg
Energia potentiala = masa x g x h
unde g = acceleratia gravitationala = 9,8 N/kg ≈ 10 N/kg
h = inaltimea in metri
m = Ep / ( g x h) = 6400 J / ( 10 N/kg x 20 m) = 6400 J / 200 Nm/kg = 32 kg