1. The problem statement, all variables and given/known data Calculate Youngs Modulus for the copper wire We have done the experiment today, here is the data: (KG)/F(N)/x(M) 0.1/0.1g/0.0 0.2/0.2g/0.0 0.3/0.3g/0.001 0.4/0.4g/0.001 0.5/0.5g/0.002 0.6/0.6g/0.003 0.7/0.7g/0.004 0.8/0.8g/0.005 0.9/0.9g/0.006 1.0/1.0g/0.009 1.1/1.1g/0.029 1.2/1.2g/0.053 1.3/1.3g/0.089 1.4/1.4g/0.160 Diameter = 0.27mm = 2.7x10-4 Natural Length = 1m 2. Relevant equations E = FL/AX gradient = F/X E = gradient x L/A 3. The attempt at a solution Radius = 1.4x10-4 A = (pi)(1.4x10-4)2 So i take the elastic region to be up to the 1kg load. The gradient of the line is (1g/0.009) = 1090. The beginning length of the copper wire was 1m E = 1090 x 1 / A A = (pi)(1.4x10^-4)^2 E = 1090/(pi)(1.4x10^-4)^2 E = 1.77x10^10 Pa = 17.7 GPa According to the internet the young modulus is about 10 times larger than this. Have i gone wrong somewhere?