Physical knowledge 182:
One monk carries water to eat, two monks carry water to eat, and three monks don’t have water to eat, why? Because the three monks were unwilling to do more than others.
The old abbot has a clear understanding of the mystery and has his own tricks to deal with the lazy behavior of the three little novice monks.
In order to make the three of them work together, the old abbot did not arrange for the three of them to take turns to fetch water, but designed a special shoulder pole and required that the water in the barrel must reach the corresponding depth and should not sprinkle a drop out, otherwise he would have to do his homework.
See how the old abbot’s special shoulder pole is designed?
It turns out that he made a T-shaped shoulder pole, as shown in the figure below:
In the figure, B is the midpoint of CD, hang the heavy object at point O on AB, and point O is 2/3 AB away from end A. The force at end A is half of the force at point B, and the force acting at end C and D is also half of the force acting at point B, that is, the forces at points A, C and D are equal.
This is a combination and balance problem of leverage. Do you understand the reason? The clever design of
solves the greed of human nature and solves an eternal problem. You should like the wisdom of the old abbot!
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