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KaneOris
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Youngs Modulus
Hey guys, i tried this problem on youngs modulas and got the wrong answer
So i was wondering if anyone could tell me where i went wrong here or tell me how to do it properly.
Problem:
A 20cm brass wire of radius 1.0mm
experiences an elongation of 0.49mm
when a tensile force of 1.0 kN is applied.
Calculate the youngs modulas of brass.
E=σ/Є
σ = F/A
Є=ΔL/L
F=1000 N
A=0.2*0.001
ΔL=4.9*10^-4
L=1.0*^-3
Є = 4.9*10^-4/1.0X10^-3
σ = 1000/0.2*0.001
E= (1000/0.2*0.001)/(4.9*10^-4/1.0X10^-3)
That came out as 1.0*10^7 for me.
The answer is apparently 1.3*10^11
Any help on this would be good.
Hey guys, i tried this problem on youngs modulas and got the wrong answer
So i was wondering if anyone could tell me where i went wrong here or tell me how to do it properly.
Problem:
A 20cm brass wire of radius 1.0mm
experiences an elongation of 0.49mm
when a tensile force of 1.0 kN is applied.
Calculate the youngs modulas of brass.
E=σ/Є
σ = F/A
Є=ΔL/L
F=1000 N
A=0.2*0.001
ΔL=4.9*10^-4
L=1.0*^-3
Є = 4.9*10^-4/1.0X10^-3
σ = 1000/0.2*0.001
E= (1000/0.2*0.001)/(4.9*10^-4/1.0X10^-3)
That came out as 1.0*10^7 for me.
The answer is apparently 1.3*10^11
Any help on this would be good.
Last edited:
