"Mo once said that the basis of ink skills is force, before the Mo family appeared, the world used more hands to work, a person's strength is only a hundred catties, even less than cattle and horses, the efficiency is extremely low, Mo called it the era of manpower." Merton said loudly.

"The Age of Manpower!"

Everyone bowed their heads one after another, and the production efficiency was extremely low during the pre-Qin period, and manpower did occupy the mainstream of society.

"After the emergence of the Mo family, began to study ink technology, create machinery, machinery began to spread in the land of China, the power of machinery is better than manpower ten times, to this day, the most powerful bridge erecting machine of the Mo family can lift tens of thousands of pounds of heavy objects, this is the power of machinery." Merton said proudly.

Everyone was silent, they had naturally heard of the power of the Mojia bridge erecting machine, and they were all shocked.

"Nowadays, the use of ink technology machinery is popularized in Datang, one person using machinery is better than the power of ten people and hundreds of people, the era of manpower has passed, and a new era of machinery has come." Merton said proudly.

"The Age of Machines!"

The three veins of the Mo family and the public loser nodded slowly, agreeing with the division of Merton, now machinery has been integrated into all aspects of Datang, and the work that could not be completed by manpower in the past can be easily completed by machinery, and many machines have replaced manpower.

Yan Shigu was shocked in his heart, picked up the pen and wrote down the four big characters destined to be written in the history book on the paper.

"However, the same person, under one person, only a hundred catties, and the power of one person to control the machinery can reach thousands of catties, ten thousand catties, what is the mechanical principle of this, have you ever thought about it?" Merton asked rhetorically.

A group of craftsmen are confused, their manufacturing machinery is passed down from the master or ancestors, where have they studied the principle behind this, only the Mo family and the public loser are thoughtful.

"The key to this is the well-known principle of leverage." Merton said loudly.

"The Principle of Leverage!"

Everyone frowned, after the revival of the Mo family, the "Book of Ink" was very popular, almost all craftsmen have a book of the Book of Ink, hoping that one day, they can create a new ink technique like the Mo family, the principle of leverage in the Book of Ink is naturally known to everyone, but there are few who create ink skills.

"That's because, your understanding is biased, the principle of leverage is not just a stick and a fulcrum, he can be a variety of forms, such as a winch, the reason why the noodle press machine just now is labor-saving, is because I am shaking a winch with a diameter of one foot, and the drive is only an inch of gear, if we use the force of 30 catties to shake the winch crank, through the effect of the lever principle, then the force of the gear can reach 300 catties to easily drive the round, to achieve the effect of saving effort." Merton explained.

Only then did everyone suddenly understand the production principle of the noodle pressing machine.

And Li Yun vaguely realized that it was not so simple, but it was like a layer of fog, and he couldn't grasp that trace of inspiration.

"In the same way, our foot force is only dozens of pounds, but the bicycle can drive hundreds of pounds of heavy objects forward, the secret is the distance between the winch and the pedal, the foot force through the winch, acting on the gear, and the gear then acting on the wheel through the chain, which is also the role of the lever principle." Merton turned over and rode on the 28 bars, and rode along the center of the venue, everyone watched Mo Jiazi easily step on the pedal, and the speed of the bicycle was comparable to that of people running.

"In addition to ink skills,

"In addition to the round shape, the principle of lever can also exist in another form, that is, the pulley, and the Mojia jack arm is made on this principle." With a wave of his hand, a curtain fell, revealing a stand fixed to the ground with a row of pulleys attached to it.

"Pulleys are levers too?" Xiao Dengkui said incredibly, the Mo family's jack arm can be described as prestigious, it is a masterpiece of the Mo family's machinery, and the Deng Ling family has naturally studied it in depth.

Merton nodded and said: "There are two kinds of pulleys, one is fixed on the jack arm is the fixed pulley, the fixed pulley is not labor-saving, but it can change the direction of the force, making it more convenient for us to exert force." ”

Merton said as he used a rope to tie up a weight weighing 100 catties, and used the rope to pass it through the fixed pulley, and the weight that originally needed to be lifted only had to be pulled down hard.

"The fixed pulley can change the direction of force, and the real labor-saving still needs to move the pulley and the fixed pulley to form a pulley group." Merton struggled to lower the rope and gasped.

Merton picked up a movable pulley on the boom and set the pulley in series, in public to form a set of the simplest pulley group, this time, Merton did not have much effort to pull the platinum weight, after that, as Merton increased the more pulley group, the easier it was for Merton to pull up the weight of 100 catties, this time Merton was very easy to pull up the weight of 100 catties, and even naughtily pulled up and down a few times.

"I see?" Ordinary craftsmen suddenly felt that their hearts suddenly opened, and the Mo family simply opened a new world of workmanship for them.

"You can see from the situation just now, as for the more pulleys, the more labor-saving, as for the amount of labor-saving, it is determined by how many ropes in the middle of the pulleys, there are several ropes, and the force used by manpower is a fraction of the object." Merton Road.

Li Yun's eyes lit up, as if he had understood the key.

Merton said loudly, "In this way, let me wait to return to the most basic form of the principle of leverage." ”

With a wave of his hand, the Mo family children lifted up something like a seesaw in a children's paradise, but the lever fulcrum was not in the center, but shifted to the side.

"This is a special lever made by the Mo family, with a length of one foot on one side and a zhang at the other end." Merton hung a hundred-pound weight at one end of a foot, and walked to the lever with a length of one foot. "You think how many catties of weight can lift a hundred catties of weight.

"Ten pounds!" Everyone said without hesitation, in the past, they only knew that the longer the length of the lever, the more labor-saving, but after Mo Jiazi's many demonstrations, they naturally knew and understood the mystery.

Merton suddenly smiled knowingly, and hung the weight of ten catties on a lever long one zhang long, and the whole lever was like a scale, and the two sides were balanced, and they were lifted at the same time

"It seems that you have all learned the secret of the principle of leverage, but have you ever imagined that if the long lever can reach a hundred zhang, a thousand zhang, or even an infinite length, then this lever can provoke multiple items." Merton's voice grew louder and louder, resounding throughout the audience.

Everyone's hearts were shocked, and they couldn't help but shudder in their hearts, if it could really be achieved like this, wouldn't it be that ink skills were omnipotent.

"Give me a fulcrum, and I'll pry the whole earth." Merton is ultimately one of humanity's most arrogant quotes.