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Diket :
Panjang rel awal, Lo = 6 m
kenaikan suhu, ΔT = 45°C
koef. Muai panjang baja, α = 0,000011/°C
Tanya :
Panjang akhir rel, L = __?
Jawab :
Step 1
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Cari dulu pertambahan panjang rel, ΔL = __?
ΔL = Lo.α.ΔT
ΔL = 6. 0,000011. 45
ΔL = 0,00297 m
Step 2
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Panjang akhir rel adalah
L = Lo + ΔL
L = 6 + 0,00297
L = 6,00297 m
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FZA