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本仪器专供初中演示物体的惯性使用.一、仪器结构由小车1、惯性球2、和金属薄板3等三部分组成,如图1所示. 1.小车尺寸为长约18cm、宽约8cm、厚约2.5cm由木或铝制成.前后端各装一个小勾,用以拴绳.在它的上面挖两个外径约为4cm的球冠形的坑4,用以盛球.2.惯性球由铁等制成,直径约为5cm,质量约0.5千克.表面要光滑.3.金属薄板的面积约长8cm、宽5cm,一端钻一个小孔,用以穿线.薄板要均匀光滑.
The instrument is designed for the inertial use of demonstration objects in junior high schools. 1. The instrument structure is composed of a trolley 1, an inertia ball 2, and a metal sheet 3, as shown in Fig. 1. 1. The trolley size is about 18cm long and about 8cm wide. , Thickness of about 2.5cm made of wood or aluminum. A small hook is installed at the front and rear ends for reins. On it, two spherical crown-shaped pits 4 with an outer diameter of about 4cm are dug to hold the ball. 2. Inertia ball made of iron, with a diameter of about 5cm, a mass of about 0.5kg. The surface should be smooth. 3. The area of the metal sheet is about 8cm long and 5cm wide. A small hole is drilled at one end to thread the thread. The sheet should be uniform. smooth.