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Pi = 4 KW
Po = W/ t
= mgh / t
= 100.10.10 / 5
= 2 KW
η = 2 Kw/ 4Kw x 100%
= 50 %
m = 100 kg
g = 10 m/s²
h = 10 m
t = 5 s
Ditanya = η...?
Jawab ⇒ Ps = W
= kW
⇒ η =