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Jawaban:

Penjelasan:

Rumus Ep = m.g.h

1. Ep = (2 kg) (10 N/kg) (12 m) = 240 Joule

2. Ep = (4 kg) (10 N/kg) (2 m) = 80 Joule

3. m = Ep/(g.h) = 5000 joule/(9,8 N/kg . 5 m) = 102,04 kg

4. h = Ep/(m.g) = 12000 joule/(2kg . 10 N/kg) = 600 m