Everyone should have been exposed to the "lever principle" after primary school! I just learned the "Lever Principle" this semester, and I saw an article in the Journal of Juvenile Intelligence Development, which was very interesting. If you are interested in it, please read the following article.
It is said that many of Archimedes' scientific discoveries were made through ideal experiments-that is, rigorous reasoning in the mind. Today we also want to test whether Archimedes can really tilt the earth if he is given a fulcrum.
Let's see, if Archimedes really wants to pry up the earth, what preparations must he make?
NO. 1 He needs to know the mass of the earth, which is about 6× 10 to the 24th power kilogram.
NO.2 if Archimedes can lift a weight of 60 kilograms, how long will it take him to pry up the earth?
According to the lever principle, we can calculate that the length of the power arm of the super lever will be 23 times that of the resistance arm 10. If the resistance arm length of the lever is 1 m, then the length of the power arm is the 23rd power meter of 10, that is,1000000 km, that is,1000000 km.
NO.3 how many meters does Archimedes have to press the lever to pry up the earth by one centimeter?
This question is not complicated at all, as long as you count how many zeros there are after 1. If Archimedes wants to pry up the earth by one centimeter, then he will push the lever at the other end of the lever and move 18 power kilometers in space, which is100000 kilometers, which is100000 kilometers. So, how long will it take him to finish?
Suppose Archimedes can lift a weight of 60 kilograms to one meter in 1 second (it is not easy for an ordinary person to complete this action! ), then, if he wants to pry up the earth 1 cm, he has to push the lever to the power of 2 10, which is-300 million years in adult terms!
It can be seen that Archimedes has been pushing the lever all his life and the earth will not move. Even if Archimedes could move at the speed of light, it would take him hundreds of thousands of years to move the earth by one centimeter.
Alas, if Archimedes had known the mass of the earth at that time, he would have killed him, and he would not have patted his chest and uttered that grandiose remark.