16. Keuntungan mekanis = 8m÷2m = (A)
17. B, karena bidang sentuhnya kecil
18. 50N - 20N = 30N (B)
19. Tekanan = 3m × 1000 kg/m^3 × 10 m/s^2 = 30.000 N/m^2 (B)
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16. Keuntungan mekanis = 8m÷2m = (A)
17. B, karena bidang sentuhnya kecil
18. 50N - 20N = 30N (B)
19. Tekanan = 3m × 1000 kg/m^3 × 10 m/s^2 = 30.000 N/m^2 (B)