Sebatang kawat elastis panjang 3m, saat digantung beban 750 gr, panjang menjaduli 3,05 m , jika luas penampang 6.10-4 m2 , tentukan modulus young kawar tersebut
rtamalonggehe
Dik : L = 3 m m = 750 gr = 75 x 10^-2 ΔL = 3,05 - 3 = 0,05 m = 5 x 10^-2 A = 6 x 10^-4 m^2 g = 10 m/s^2 Dit : E = ...? Peny : E = F.L/A.ΔL = m.g.L/A.ΔL = 75 x 10^-2.10/6 x 10^-4.5 x 10^-2 = 25 x 10^4 N/m^2
m = 750 gr = 75 x 10^-2
ΔL = 3,05 - 3 = 0,05 m = 5 x 10^-2
A = 6 x 10^-4 m^2
g = 10 m/s^2
Dit : E = ...?
Peny :
E = F.L/A.ΔL
= m.g.L/A.ΔL
= 75 x 10^-2.10/6 x 10^-4.5 x 10^-2
= 25 x 10^4 N/m^2