标题： 关于动能摩擦的研究：铁木辛柯振子 显示英文标题

标题： A study on kinetic friction: the Timoshenko oscillator

摘要： 摩擦是一种复杂的现象，在日常生活中非常重要。 我们提出了一种易于构建且成本低廉的实验，用以说明库仑的滑动摩擦定律。 所谓的摩擦或蒂莫申科振子是由一个板通过其旋转支座上的重力和摩擦力之间的竞争而产生周期性运动的装置。 这种振子的周期可以测量板与支座之间的滑动摩擦系数\mu _k。 我们的原型主要由一个电机、乐高积木和一个低成本的微控制器组成，尽管结构简单，但所得结果与文献中找到的\mu _k 值有很好的一致性。 显示英文摘要

摘要： Friction is a complex phenomenon that is of paramount importance in everyday life. We present an easy-to-build and inexpensive experiment illustrating Coulomb's law of kinetic friction. The so-called friction, or Timoshenko, oscillator consists of a plate set into periodic motion through the competition between gravity and friction on its rotating supports. The period of such an oscillator gives a measurement of the coefficient of kinetic friction \mu_k between the plate and the supports. Our prototype is mainly composed of a motor, LEGO blocks, and a low-cost microcontroller, but despite its simplicity the results obtained are in good agreement with values of \mu_k found in the literature.