whongaliemdiketahui : l = 1 m A = 2 mm² = 2 x 10^-6 m² F = m.g = 100 . 10 = 10³ N e = 2 x 10 ^11 N/m² ditanya : Δl tegangan = F / A = 10³ / (2 x 10^-6) = 5 x 10^8 N/m² e = tegangan / regangan 2 x 10^11 = (5 x 10^8) / regangan regangan = (5 x 10^8) / (2 x 10^11) Δl / l = 2,5 x 10^-3 Δl / 1 = 2,5 x 10^-3 Δl = 2,5 x 10^-3 m Δl = 0,0025 m jawaban : A jaddikan yang terbaik
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9) A 10) A Diketahui = m = 100 kg g = 10 m/s E = 2 x 10^11 N/m² A = 2 mm² = 2 x 10^-6 m² l = 1 m Ditanya = Δl ...? Jawab = F = mg = 100 x 10 = 10³ N tegangan = F/A = 10³ / (2 x 10^-6) = 5 x 10^8 N/m² E = tegangan/regangan 2 x 10^11 = (5 x 10^8)/regangan regangan = (5 x 10^8) / (2 x 10^11) Δl / 1 = 2,5 x 10^-3 Δl = 2,5 x 10^-3 m Δl = 0,0025 m
A = 2 mm² = 2 x 10^-6 m²
F = m.g = 100 . 10 = 10³ N
e = 2 x 10 ^11 N/m²
ditanya : Δl
tegangan = F / A
= 10³ / (2 x 10^-6)
= 5 x 10^8 N/m²
e = tegangan / regangan
2 x 10^11 = (5 x 10^8) / regangan
regangan = (5 x 10^8) / (2 x 10^11)
Δl / l = 2,5 x 10^-3
Δl / 1 = 2,5 x 10^-3
Δl = 2,5 x 10^-3 m
Δl = 0,0025 m jawaban : A
jaddikan yang terbaik
10) A
Diketahui = m = 100 kg
g = 10 m/s
E = 2 x 10^11 N/m²
A = 2 mm² = 2 x 10^-6 m²
l = 1 m
Ditanya = Δl ...?
Jawab = F = mg = 100 x 10 = 10³ N
tegangan = F/A = 10³ / (2 x 10^-6) = 5 x 10^8 N/m²
E = tegangan/regangan
2 x 10^11 = (5 x 10^8)/regangan
regangan = (5 x 10^8) / (2 x 10^11)
Δl / 1 = 2,5 x 10^-3
Δl = 2,5 x 10^-3 m
Δl = 0,0025 m