浮力产生的原因是液体对物体向上的压力大于液体对物体向下的压力。笔者自行设计了一个简单易行、有趣的小实验,它能直观明了地显示浮力产生的原因。一、实验材料大号饮料瓶两个,玩具弹力球一个,一次性输液管一段,细铁丝一段,废油笔芯一段,强力胶少许。二、制作方法1.如图1-a所示,用铁丝加工一个弹力球推杆。如图1-b所示,用铁丝加工一个支架,作固定装置用。2.取两个大号饮料瓶,把其中的一个瓶底切掉, The reason for the buoyancy is that the pressure of the liquid on the object is greater than the pressure of the liquid on the object. I designed a simple, fun little experiment, which can be intuitively shows the reasons for the buoyancy. First, the experimental material Queen drink bottle two, a toy elastic ball, a disposable infusion tube, a section of fine wire, waste oil refill section, a little glue. Second, the production method 1. Shown in Figure 1-a, with a wire processing an elastic ball putter. As shown in Figure 1-b, a bracket is made of iron wire for use as a fixture. 2. Take two large beverage bottles, cut one of the bottom of the bottle,