Sebatang rel kereta api panjangnya 10 meter suhu 10°C. Jika saat dilalui kereta suhunya naik menjadi 100°C dan koefisien muai panjang besi 0,000012/°C, berapa pertambahan panjang rel?
dnnyz07
Lo = 10 m ΔΤ = 100-10= 90°C α = 0,000012/°C
dit : ΔL ? = Lo x ΔΤ x α = 10 x 90 x 0,000012 = 0,0108 m
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DimasAditya132
Diket: L1 = 10m T1 = 10 T2 = 100 α = 0.000012 ΔL = Lo x α x ΔT = 10 x 0.000012 x 90 (100-10) = 0.0012 x 9 =0.0108
ΔΤ = 100-10= 90°C
α = 0,000012/°C
dit : ΔL ?
= Lo x ΔΤ x α
= 10 x 90 x 0,000012
= 0,0108 m
T1 = 10
T2 = 100
α = 0.000012
ΔL = Lo x α x ΔT
= 10 x 0.000012 x 90 (100-10)
= 0.0012 x 9
=0.0108
L2 = ΔL + L1
= 0.0108 + 10
= 10.0108