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rubber band power car wind car making science experiment equipment for middle school science popularization teaching aids science and technology small production science and education

rubber band power car wind car making science experiment equipment for middle school science popularization teaching aids science and technology small production science and education

橡筋动力车风力车做中学科学实验器材科普教具科技小制作科教

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    ¥4.0
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  • Exchage Rate 1 CNY ≈ 0.1418 USD
  • Weight 0.15 kg/piece
  • Stock num 50000 piece
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义乌市驰购百货贸易商行

  • Description

           橡筋动力车课程课件

橡皮筋的力是怎么产生的呢？

橡皮筋、弹簧这样的物体在受到外力作用时，形状很容易改变，在形状改变时它们会产生一个要恢复原来形状的力，这个力叫弹力。当他们恢复到原来的形状后，弹力就恢复了。
 
实验计划
 
1.可以在小车的轴上缠绕不同圈数来做对比实验。讨论确定实验的圈数。
2.实验时还应注意：小车相同，橡皮筋相同。地面光滑程度相同。
3.可以在地面上做好相应的标记来比较它们的行驶的距离。
4.小车行驶的距离是指小车前轮从起点到终点的距离。
想一想：
 
要使小车向前运动，橡皮筋在车轴上缠绕的方向应该怎么样主图 (5)

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Update time：20230318111318


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