“木桶原理”本属管理学范畴 ,其原理是 :用长短不一样的木板围成的木桶盛满水时 ,水位高度不可能同时满足每一木块高度 ,只能与最短的那块相平 ,即最大盛水量取决于最短的那块木板的高度 .这一原理在物理问题中也常常得到应用 ,现举例说明 .一、力学问题中的木桶原理例 1　如 The “barrel principle” is a category of management. The principle is that when a bucket surrounded by different lengths of wood is filled with water, the height of the water level cannot satisfy the height of each block at the same time, but only the shortest one. Leveling, that is, the maximum amount of water depends on the height of the shortest piece of wood. This principle is also often applied in physical problems. Here is an example. First, the barrel principle of mechanical problems Example 1