“失重”和“超重”现象的实验,是高中物理第一册中的两个演示实验。通过这两个实验,可使学生对“失重”和“超重”的现象一目了然,从而清楚地认识这两个新的概念。现将改进的演示实验介绍如下。 1.器材:滚摆一只;杆秤一巴,(量程为滚摆质量的2倍左右);细棒一支(长约20厘米);细线2米。 2.整个装置如附图。 The experiments of “weightlessness” and “overweight” phenomena are two demonstration experiments in the first volume of high school physics. Through these two experiments, students can see at a glance the phenomena of “weightlessness” and “overweight”, thus clearly understanding these two new concepts. The improved demonstration experiment is described below. 1. Equipment: roll one; steelyard one bar, (range is about 2 times the quality of the roller); thin stick (about 20 cm long); thin line 2 meters. 2. The entire device is as shown in the attached drawings.