Luas penampang: 4 mm, massa : 0,2 N, pertambahan panjang: 0,04 cm, panjang kawat mula-mula: 40 cm. Tentukan modulus young:
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A = 4 mm = 0,004 m
m = 0,2 N
ΔL = 0,04 cm = 0,0004 m
L = 40 cm = 0,4 m
dit : Y ?
jawab :
Y = F . A / ΔL . L
= m.g .A / ΔL .L
= 0,2 . 10. 0,004 / 0,0004 . 0,4
= 0,008 / 0,00016
= 50