In our world, friction is everywhere, and our food, clothing, housing and transportation are inseparable from friction. You can imagine what the world is like without friction.
What would it be like if there were no friction on the earth? Without friction, we can't walk. Because we can't stand still and walk. For example, walking on the ice is slippery, and we will be full of sweat if we don't walk far. If there is no friction, the road is smoother than ice, and people will feel better only when they land. If there is no friction, the screw can't be tightened, and the nail nailed to the wall will automatically loosen and fall off.
When pushing the table, if there is no thrust and friction, the object will move to the right, so the object will move to the right, so the object will be affected by a static friction to the left, which will hinder this trend.
For another example, in the process of conveying the goods upward by the conveyor belt, if there is no friction, the goods will slide down the inclined plane, so the objects tend to slide down the inclined plane, so the conveying brings the goods a static friction along the inclined plane, which hinders the downward movement trend of the goods.
If there is no friction and medium resistance, the total amount of mechanical energy remains unchanged when the object only converts kinetic energy and potential energy.
This is the effect of no friction.
In terms of wearing, what will happen if there is no friction? We can't put on our shoes and trousers, our belts can't be buckled, our clothes will slip off after we put them on, our buttons can't be buckled, the makeup painted on women's faces will fall off because there is no friction, and even our hats will fall off because there is no friction.
What if there is no friction in eating? Our chopsticks, spoons and shovels are all useless. We can't pick up our food in any way. Even if we put it in our mouth, it will wander around uncontrollably. What we eat will be directly discharged and there is no time to absorb it. Because there is no friction, food residue will not stay in the body. As you can imagine, in this case, it is conceivable that human excrement will be discharged in this way. ......
In terms of shelter, if there is no friction, the quilt can't be lifted and the back can't be covered. After the quilt is covered, the position of the quilt cannot be adjusted at will. When you get up, you will get up because there is no friction.
In business, without friction, we will be unable to move, ballpoint pens will not write words, ink will flow out, and we can't afford pens. We can't drive. As soon as we got on the bus, we couldn't step on the accelerator, the brakes and the clutch. Even if we step on the accelerator, the car won't move. We still face the problem that we can't go upstairs, because without friction, we can't climb the stairs and the drive shaft of the elevator can't move the elevator.
In the construction site, the soil can't be dug out and transported out without friction, which means we can't build a building.
In the factory, the machine doesn't work, because there is no friction, so that the shaft can't drive the gear, and one gear can't drive the other gear, and the rocket can't be launched vertically anymore.
Of course, there is a good side without friction. There will be no more bacteria in the teeth, no more things in the teeth, no more dandruff falling on the clothes, and no more entanglement in the hair. It's not hard to pull big and heavy things, and the rocket launches quickly. When the rocket return capsule passes through the atmosphere, the world will not rub against the air to produce high temperature, and hands do not need to be washed again, because it is clean and free from bacteria. Maglev trains can also go very fast. Lighters won't work, so fewer people will smoke. The world without friction is hard for us to accept, because it has changed many things we are familiar with at ordinary times.