同学们已经学过用量筒和天平测物质密度的方法,下面再介绍几种用阿基米德原理测密度的方法.1.利用下沉的物体测密度方法:①用弹簧秤称出金属块的重量G.②用弹簧秤拉住金属块把金属块浸没在水中,记下这时弹簧秤的示数G’,则F浮=G-G’.③计算出金属块的密度的表达式:因金属块浸没在 The students have learned how to measure the density of materials using a graduated cylinder and a balance. Here are some methods to measure the density using Archimedes’s principle. 1. Measure the density with a sinking object: 1 Use a spring balance to weigh the metal. Weight G.2 with a spring balance to pull the metal block to immerse the metal block in the water, note the spring balance scale G’, then F float = G-G’.3 calculate the expression of the density of the metal block: due to metal Block immersed in