物理图象不仅可以用来说明物理规律,还可以用它来解题,特别是有的难题,解起来较麻烦,有的同学可能还不一定看得懂,但是采用画物理图象来解题,能一目了然,有时还较简便,下面我就举二个例题来说明.例1如图1所示,工人利用滑轮装置从离地面10米深的井中,把质量共为10千克的水桶与水提至水面,由于水桶漏水,每升高1米,要漏去0.2千克的水,设滑轮,绳的质量和阻力不计,则工人要将这桶水提升到地面,要做多少 Physical images can not only be used to explain the laws of physics, but also use it to solve problems, especially difficult problems. They are more difficult to solve. Some students may not necessarily understand it, but they use physical images to solve problems. It can be seen at a glance and sometimes it is relatively simple. I will give two examples to illustrate. Example 1 As shown in Figure 1, workers use a pulley device to remove 10 kilograms of water and water from buckets 10 meters deep from the ground. To the surface of the water, due to the water leaking from the bucket, 0.2 kg of water should be drained for every 1 meter of rise. If the mass of the rope and the resistance of the rope are not counted, then the worker must raise this bucket of water to the ground.