天平、量筒(或量杯)是测量密度的两种常用工具,但有时受实验条件的限制或缺量筒(或量杯)、或缺天平,甚至两种器材均无,这时应如何测量固体密度呢?以下结合实例分类说明之.一、缺天平类器材中提供了量筒(或量杯),不妨用排“液”法测其体积,又考虑到物体漂浮时,G物=F浮=ρ液V排g,而V排又可利用量筒测得,这样 Balances, graduated cylinders (or measuring cups) are two common tools for measuring density, but sometimes they are limited by experimental conditions or lack of measuring cylinders (or cups), or lack of balance, or even two kinds of equipment, then how to measure the density of solids? ? The following description of the classification of cases with description. First, the lack of equipment provided in the measuring cylinder (or measuring cup), may wish to use the row “liquid” method to measure the volume, but also consider that when the object floats, G = F floating = liquid V Row g, and row V can be measured using a graduated cylinder, so