Demonstrations of the action and reaction law and the energy conservation law using fine spherical plastic beads
Demonstrations of the action and reaction law and the energy conservation law using fine spherical plastic beads
复制标题
使用细球形塑料珠演示作用和反应定律以及能量守恒定律
DOI：
10.1088/0031-9120/43/6/012
复制
发表时间：
2008
影响因子：
--
通讯作者：
K. Kagawa
中科院分区：
文献类型：
--
作者：
A. Khumaeni;S. Tanaka;A. Kobayashi;Y. Lee;K. H. Kurniawan;K. Ishii;K. Kagawa
用塑料小球代替金属球轴承，成功地制成了演示牛顿第三定律和力学能量守恒定律的装置。为了证明牛顿第三定律，使用了特殊的磁化培养皿作为物体，而为了检验能量守恒定律，使用了由薄塑料片组成的大角度无摩擦斜面（θ = 50°），其上通过静电力附着有细塑料珠。利用这种方法，成功地进行了能量守恒定律的定量测量，误差小于3%。这种无摩擦方法的一个很大的优点是，我们可以用同一个物体（一个培养皿）来演示多种力学定律，如第一、第二和第三运动定律，动量守恒定律和能量守恒定律。
Equipment for demonstrating Newton’s third law and the energy conservation law in mechanics have successfully been constructed utilizing fine spherical plastic beads in place of metal ball bearings. To demonstrate Newton’s third law, special magnetized Petri dishes were employed as objects, while to examine the energy conservation law, a large-angle frictionless slope (θ = 50°) consisting of a thin plastic sheet on which the fine plastic beads were attached by the electrostatic force was employed. Using this method, a quantitative measurement of the energy conservation law was successfully carried out with a small error of less than 3%. A great advantage of this frictionless method is that we can use the same object (a Petri dish) to demonstrate many kinds of mechanics laws, such as the first, second and third laws of motion, the momentum conservation law, and the energy conservation law.
使用精细塑料珠进行力学教学的无摩擦演示
DOI：
--
发表时间：
2011
期刊：
教師教育研究
影响因子：
--
作者：
石井恭子
通讯作者：
石井恭子