Cao Chong weighed the elephant, and how else could he weigh the elephant

The principle of the bar bar is made flat, (simple, bound with wooden blocks, interspersed with root wood, stable wood,) let the elephant stand on the side, the other side of the break to the surface of the stone, plus the balance, and then weigh the weight of the stone!

When an elephant is killed, a little bit of weighing adds up to the weight of the elephant.

Cao Chong. An elephant was weighed with a boat, a pile of stones, and a scale.

weight. When Cao Chong was five or six years old, his knowledge and judgment skills were like those of an adult. Once, Sun Quan.

A giant elephant was sent, Cao Cao.

He wanted to know the weight of the elephant and asked his subordinates about it, but none of them could tell how to weigh it.

Cao Chong said: "Put the elephant on the big boat, mark the place where the water surface reaches, and then let the boat load other things, weigh these things, and then you can know by comparison." Cao Cao was very happy to hear this, and immediately did so.

Use the principle of leverage.

As early as the late Warring States period, the Mohist book "The Book of Ink" comprehensively expounded the principle of leverage. The content of the book includes both equal-arm levers and unequal arm levers, as well as the principle of lever rotation.

Drive the elephant to one end of the lever, then place a basket at the other end and fill it with stones. Remove the stone when the lever has the elephant just off the ground. At this time, the weight of the stone is basically equal to the weight of the elephant.

The reason for this method is very simple, that is, when using the lever to balance, the mass of the objects at both ends is equal. Because it is difficult to balance the two ends in practice, it can be assumed that the mass of the stone is only a little more than that of the elephant when the elephant is cocked, and this error is negligible.

In fact, in addition to Cao Chong's method of weighing the elephant, you can also weigh the elephant by weighing, if the scale is large enough. According to the effect of four or two thousand pounds. You can definitely weigh an elephant.

Make a huge lever with one end enlarged elephant and one end ready to hold stones or standing people. Another example is to make a scale, weigh the elephant, and the reading is the weight of the elephant.

You can use the principle of leverage, first make a huge rocker, put the elephant on one end of the rocker, and then find enough people to stand on the other side, and wait for the balance on both sides of the rocker, then weigh each person separately and then add up, and finally add up to the weight of the elephant. And this method has similarities with Cao Chong's elephant.

In addition, the weight of the elephant can be weighed in a pool. However, this will require preparing a huge pool of water and placing the elephants in the pool. Then the water, which was originally very full, will overflow with the entry of elephants.

In the end, you only need to subtract the amount of overflow water from the total amount of water, which is the weight of the elephant.

Leap grace is as unified. Fierce sweet and sweet

She uses stones and you use sand, corn, sweet potatoes, sorghum and so on ......Both.

Flour, rice, bottled water, people.

Cao Chong said: "Put the elephant on the big boat, mark the place where the water surface reaches, and then let the boat load other things, (weigh these things), then you can know the result by comparison." Cao Cao was very happy to hear this, and immediately did so.

It can be used: the drainage method of the Archimedes principle, the balance of the lever principle, the modern tool weighbridge and other methods.

1. Drainage method of Archimedes' principle. According to Archimedes' principle, an object immersed in a stationary fluid is subjected to a buoyant force equal to the weight of the fluid dislodged by the object. Therefore, the weight of an equal volume of water discharged by an elephant in a large pool is the weight of an elephant.

2. The principle of leverage refers to the balance of Xiaoshan. According to the principle of steel pipe, the distance from the power fulcrum to the dynamic action line = the distance from the resistance fulcrum to the resistance action line, the weight of the elephant at one end of the large balance is equal to the weight of the weight at the other end.

3. Modern tool weighbridge. Modern tool floors belong to the large scales set on the ground, which are usually used to weigh the tonnage of trucks, and are the main weighing equipment used for bulk cargo measurement in factories, mines, and businesses. The weight of an elephant can be weighed directly.