LAB A 103 - Lab A Spring 2016 Objective To Determine Youngs Modulus of elasticity of a thin wire by stretching Theory The following equations were used

# LAB A 103 - Lab A Spring 2016 Objective To Determine Youngs...

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Lab –A Spring 2016Objective:To Determine Young’s Modulus of elasticity of a thin wire by stretchingTheory:The following equations were used to calculate necessary values1.Stress = F/A2.Strain = ΔL/L3.Y = Stress/Strain = (F/A)/( ΔL/L)4.A = [π(d^2)]/4Experimental Procedure:Please refer to lab manualResults:Data TablesL1 = 11.10mm; L= 730mm; D= .00071 mm A = 3.96* 10-7m2Table 1Weightm (kg)Applied ForceF= mg (N)Reading of the Micrometer ScrewL2 (mm)ΔL=L2-L1(mm)StrainΔL/LStressF/A (N/m2)19.811.1002.47*10^7219.611.200.10.0094.94*10^7329.411.290.190.09007.42*10^7439.211.360.20.01018019.89*10^754911.450.350.031531531.23*10^8658.811.520.420.037837841.48*10^8768.611.610.510.045945951.73*10^8Table 2 Weightm (kg)Applied ForceF= mg (N)Reading of the Micrometer ScrewL2 (mm)ΔL=L2-L1(mm)StrainΔL/LStressF/A (N/m2)768.611.610.510.045945951.73*10^8658.811.490.390.351351351.48*10^854911.390.290.026126121.23*10^8439.211.360.20.01018019.89*10^7329.411.220.120.01081087.42*10^7219.611.110.01.0009004.94*10^719.811.0002.47*10^7
Discussion and Questions:1.When the elastic limit is not exceeded, the deformation is recoverable so comparing both cases of