Ile wynosi praca przemieszczenia masy 9.8kg z h1=1,8m na h2=11,2 m?
dane:
m = 9,8 kg
h1 = 1,8 m
h2 = 11,2 m
g = 10 m/s²
szukane:
W = ?
W = Ep = m·g·h
h = h2-h1 = 11,2m-1,8m = 9,4 m
W = 9,8kg·10m/s²·9,4m = 921,2 kg·m²/s²
W = 921,2 J
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Odp.Szukana praca wynosi 921,2 J (dżula).
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dane:
m = 9,8 kg
h1 = 1,8 m
h2 = 11,2 m
g = 10 m/s²
szukane:
W = ?
W = Ep = m·g·h
h = h2-h1 = 11,2m-1,8m = 9,4 m
W = 9,8kg·10m/s²·9,4m = 921,2 kg·m²/s²
W = 921,2 J
========
Odp.Szukana praca wynosi 921,2 J (dżula).