Find out the reason why luggage suitcases are misaligned

Anyone who has ever dragged luggage suitcases across the airport hall must have encountered the situation of luggage suitcases tipped or deflected while moving. Even when walking at a slow pace, you can still see your towing suitcase so.

After some empirical research, French scientists discovered the best solution to minimize the situation that the suitcase luggage was tilted is not really slowing down, but rather increasing speed . The faster you move, the less your luggage suitcase will flip. The suitcase flip is essentially related to applied physics experiments. And scientists believe that studying these experiments will open up many unexpected results in everyday human life.

According to Live Sciences, physicist Sylvain Courrech du Pont at Paris Diderot University (France) studied the movement of the suitcase with the original purpose of giving interesting information to entertain students. My study in boring test sessions. However, his research has solved "a real scientific question" that only a few people ever invest in seeking answers.

The faster you move, the less your luggage suitcase will flip.

Specifically, the movement of a towing suitcase is a combination of two types of movement - while the wheel moves, the body of the suitcase moves only in one direction rather than shifting.The interference between rotary motion and forward motion is the point that causes imbalance when the suitcase moves.

In the experiment, scientists used a two-wheeled aluminum suitcase and placed it on a treadmill at 16km / hr. They analyze the motion of the model depending on the suitcase weight distribution and the speed at which it is pulled. The white LED on the model helps to track the movement of the suitcase.

Scientists discovered that when a suitcase wheel was lifted off the floor (simulating when the suitcase actually touched an object or a hole), the suitcase began to tilt to the side and began to work. act like a pendulum. When the frequency of shaking is large, the suitcase may be overthrown.

The scientists also found that the best way to reduce the vibration that leads to this overthrow is not to slow down the movement speed of the suitcase, but to pull the suitcase moving faster. According to Courrech du Pont, this was due to the forward rotation and movement of the suitcase moving together . Therefore, when the suitcase is pulled faster, it means that it is infused with translational motion energy that makes it win the energy of rotation, which helps to keep the luggage suitcase from tilting or shifting. Unexpected direction.

Physicist François Petrelis at the École Normale Supérieure, Paris - who was not involved in the study - commented: "This is a very important study, including experiments and theories about a problem that every day has. This can happen to anyone carrying luggage on the move, indicating that there are many problems - including our daily concerns - that are still waiting to be answered. It means that there are still many issues that have not been resolved, young students sometimes feel that most important findings have been discovered, which may be true in some aspects of physics, but in In most areas, there are many problems that have yet to find an answer. "

Courrech du Pont said these findings could help researchers simulate and design better and more efficient suitcases. We will no longer have to worry and be interrupted because the suitcase is flipped every time we move at the airport. Courrech du Pont also said he now wants to research to better understand the principle of skateboarding movement.

Although the grip and skateboarding seemed to be very different, Courrech du Pont still paid great attention to the influence of the rotations that the skaters created to move forward. - similar to the relationship between the two types of movement he studied in the case of our towing suitcases.

Courrech du Pont and colleagues detailed their findings on June 21 in the Proceedings of the Royal Society A. magazine.