用霍尔传感器测量杨氏模量————实验数据记录和数据处理（参考答案）铜片宽度b=23.28mm，铁片宽度b=23.10 mm，长度d=230.0 mm表1黄铜片厚度的测量n｜1｜2｜3｜4｜5｜6｜平均值｜a /mm｜0.959｜0.959｜0.960｜0.958｜0.952｜0.942｜0.955｜表2测量黄铜样品的杨氏模量，霍尔传感器定标i｜m /g｜Zi /mm｜Ui /mV｜逐差法｜ΔZ /mm｜Z2i /mm｜Zi Ui /mVmm｜1｜10.0 ｜0.120 ｜105｜0.570 ｜0.0144 ｜12.60 ｜2｜20.0 ｜0.262 ｜210｜0.568 ｜0.0686 ｜55.02 ｜3｜30.0 ｜0.420 ｜316｜0.561 ｜0.1764 ｜132.72 ｜4｜40.0 ｜0.570 ｜433｜0.565 ｜0.3249 ｜246.81 ｜5｜50.0 ｜0.690 ｜544｜0.4761｜375.36 ｜6｜60.0 ｜0.830 ｜644｜0.6889 ｜534.52 ｜7｜70.0 ｜0.981 ｜753｜0.9624 ｜738.69 ｜8｜80.0 ｜1.135 ｜870｜1.2882 ｜987.45 ｜平均值｜0.626 ｜484.38 ｜0.566 ｜0.49999 ｜385.40 ｜10.38(×1010N/m2)理论值E铜=10.55×1010N/m2相对误差1.6%计算霍尔位置传感器的灵敏度用最小二乘法：760(mV/mm)或者作图法：(mV/mm)表3铁片厚度的测量n｜1｜2｜3｜4｜5｜6｜平均值｜a /mm｜0.887｜0.875｜0.873｜0.888｜0.881｜0.876｜0.880 ｜表4测量可锻铸铁样品的杨氏模量i｜m /g｜Ui /mV｜逐差法ΔU /mV｜1｜10.0 ｜82｜308 ｜2｜20.0