实验二 探究弹力和弹簧伸长的关系
实验操作·创新探究
关键能力·题型突破
钩码数量/个(一个钩码10g)0123456弹簧长度/cm25.3527.3529.3631.3533.3535.3437.35弹簧形变量/cm2.004.016.008.009.9912.00
材料的长度l/m横截面积S/cm2拉力F/N250500750100010.050.040.080.120.1620.050.080.160.240.3230.050.120.240.360.4810.100.020.040.060.0810.200.010.020.030.04
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