"Hahaha, it's fun, I haven't played like this in a long time,...... Huh? Why don't you laugh? ”

Just finished riding the roller coaster, Xia Fang jumped and screamed excitedly. But Ye Ying, as well as Xia Hu, covered their hearts and said: "It seems that I am really old, and when I turn on it, the world is spinning, my heart?" ”

The two old men couldn't do it anymore, so they waved their hands again and again: "You guys go play, let's go sit over there." ”

The direction Ye Ying and Xia Hu pointed to was the flower bed where Zhou Yun was sitting.

Inside the flower bed tree, it is cool to sit in a shady position. Zhou Yun also bought a drink and greeted: "You two don't have fun with the children, you don't want to die." Come and rest for a while. ”

Zhou Yun shouted, Ye Ying and Xia Hu left. At this time, there were only three people left: Ye Xiuwen, Xia Fang, and Ye Xiuwen.

Xia Fang asked Ye Xiuwen again: "Brother-in-law? You've been on a roller coaster, why haven't you reflected it at all? ”

"Do you think it's me doing the task thrill, or the roller coaster thrill?" Ye Xiuwen asked very strangely.

“····························”

Xia Fang was speechless, although she had not seen the task of the wolf warrior, she had heard of it. If the mission of the ordinary army is A. Then the task of the wolf warrior is the SSS level, and the two are not on the same level at all.

So Ye Xiuwen asked this, and after Xia Fang heard it, she could only be speechless. But Ye Xiuwen didn't forget it, even the youngest Ye Fan didn't reflect, which is a little strange.

"Ye Fan? You're so small, why don't you have the slightest reflection? Xia Fang asked.

"Because when I'm on a roller coaster, I'm thinking about the history of the roller coaster, calculating its trajectory, its speed, and its revenue, do you know what kind of roller coaster has the highest profit?"

Ye Fan asked rhetorically, Xia Fang couldn't help but shake her head, how did she know this?

However, at this time, Ye Fan sighed and said: "Auntie, I didn't say you, everyone says that you have big breasts and no brains, but I don't think your breasts are big, why are you brainless?" ”

"Hey? Yours isn't big, huh? Xia Fang said everything angrily. Ye Xiuwen smacked his lips on the side, meaning to warn Xia Fang not to tell the child everything.

But he didn't want to be at this time, but Ye Fan looked up and said proudly: "Hmph, that's why I studied hard." ”

"I, I ,......"

Xia Fang raised her fist angrily, but in the end she didn't put it down. Because at this time, Ye Fan's small mouth had already begun to speak.

She asked Xia Fang rhetorically, do you know why you kept screaming excitedly when you came down after you did a roller coaster?

Because roller coasters are originally an exciting and challenging entertainment tool.

If you're interested in physics, you'll not only experience the thrill of adventure while riding a roller coaster, but also help you understand the laws of mechanics.

In fact, the motion of a roller coaster contains many principles of physics that people have skillfully applied when designing roller coasters.

It would be wonderful to experience first-hand the effects of energy conservation, acceleration, and force.

It's like dealing with physics without using your brain, just tighten your abs and protect your stomach.

Of course, if you are limited by your physical and mental capacity to experience the various sensations of the roller coaster, you may as well stand aside and carefully observe the movement of the roller coaster and the reaction of the riders.

In the beginning, the roller coaster's small train climbed to the highest point by the thrust of a catapult or a chain, but after the first descent, there was no more device to power it.

In fact, from this point on, the only "engine" that drives it along the track will be the gravitational potential energy, that is, the process of conversion from potential energy to kinetic energy, and from kinetic energy to gravitational potential energy.

The first type of energy, i.e., gravitational potential energy, is the energy that an object possesses by itself due to its location, which is produced due to the gravitational interaction of the object and the earth.

For roller coasters, their potential energy reaches its maximum when it is at its highest point, that is, when it climbs to the top of the "hill".

When the roller coaster begins to descend, its potential energy decreases (because the height drops), but the energy does not disappear, but is converted into kinetic energy, which is the energy of movement.

However, in the process of energy conversion, heat is generated due to the friction of the roller coaster's wheels against the track, resulting in a small amount of mechanical energy (kinetic energy and potential energy). That is why, in the design, the subsequent hill is slightly shorter than the one at the beginning.

The last car of the roller coaster is the most exciting gift that the roller coaster has to offer to the brave passengers.

In fact, the feeling of descent is strongest in the rear compartment of the roller coaster. This is because the last car passes through the highest point faster than the car at the head of the roller coaster, due to gravity acting on the center of mass in the middle of the roller coaster.

In this way, the person in the last carriage is able to quickly reach and cross the highest point, creating a feeling of being thrown away as the center of mass is accelerating towards it. The wheels of the aft car are firmly fastened to the tracks, otherwise the small car could derail and fly out when it reaches the vicinity of the summit.

But the situation of the carriage at the front of the car is different, its center of mass is "behind", in a short time, although it is in a state of decline, but it has to "wait" for the center of mass to cross the high point to be pushed by gravity.

Because the vertical vertical loop of the roller coaster is a centrifuge device, the passenger's inertial speed points straight ahead as the train approaches the loop.

However, the carriage has to keep moving along the track, so that the passenger's body cannot move in a straight line. Gravity then pushes the passenger off the floor of the carriage, while inertia squeezes the passenger towards the floor.

The outward inertia of the passenger itself creates an inertial force that keeps the passenger firmly at the bottom of the carriage even when he is head-down. Of course, passengers need some kind of safety gear to keep them safe, but in most large roundabouts, passengers stay in the carriage with or without them.

And as the train moves along the loop, the net force acting on the passengers is constantly changing. At the bottom of the loop, because the acceleration is upward, the track supports the visitor upwards more than gravity, and the visitor can feel the phenomenon of being overweight, that is, feeling particularly heavy. As they rush all the way up the loop, gravity pushes the passenger towards the floor. So passengers will feel gravity squeeze you toward your seat.

At the top of the loop, the passenger is completely reversed, and the gravity pointing to the ground and the downward support force of the track want to drag the passenger out of the seat, but the support force and gravity are only balanced with the centrifugal force, that is, the centripetal force required for movement, at this time, if the speed of the flying car is small, and the centrifugal force generated is less than the gravity, the flying car will be in danger of falling.

Therefore, a certain speed is required when returning to the top of the loop to ensure safety. At the same time, due to the existence of centrifugal force, part of the gravity is canceled out, so the passenger will be weightless, and the body will become extremely light. When the train exits the loop and travels horizontally, passengers return to their original gravity.

And the charm of the big loop lies in the ,......

At this time, Ye Fan was talking endlessly, while Xia Fang was swaying with Venus in his eyes.

"You guys play first, I'll go buy some drinks, bye-bye, goodbye! ......”

Xia Fang escaped, she didn't want to play with this father and daughter anymore. Because one nerve is numb, and the other is a robot child. No matter what you do, you will analyze a series of data! ......