Oblicz całkowitą energię mechaniczną gołębia o masie 0,5 kg lecącego z prędkością 10 m/s 5 cm nad ziemią.
h = 5cm = 0,05m
m = 0,5kg
v = 10m/s
E = Ep + Ek
E = mgh + 0,5mv² = m(gh + 0,5v²)
E = 0,5kg[0,05m x 10N/kg + 0,5 x (10m/s)²] = 25,25J
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h = 5cm = 0,05m
m = 0,5kg
v = 10m/s
E = Ep + Ek
E = mgh + 0,5mv² = m(gh + 0,5v²)
E = 0,5kg[0,05m x 10N/kg + 0,5 x (10m/s)²] = 25,25J
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Litterarum radices amarae sunt, fructus iucundiores
Pozdrawiam