Doomsday: Humanity shrinks 100 times

Chapter 182 Center of Gravity and Friction
Taking these conditions into consideration, Lu Yuning decided to climb onto the weeds and build a platform on top to moor the boat.

However, the grass area next to them is not suitable for experiments, mainly because there are many types of grass here, with different lengths, and it is relatively sparse.

The grass area at the Spark Base is mostly covered with bluegrass, which is dense and soft, and grows relatively flat due to long-term pruning before the doomsday.

These are also important conditions for the concept of grass-shaped ships.

It was still early, and everyone soon arrived at the weedy area beside the road.

However, when Lu Yuning and Zhang Muyan saw this area, they were suddenly dumbfounded. They had overlooked a problem.

This area has a slope.

Although it was not steep, the slight incline was already troublesome for them.

"This is troublesome," Lu Yuning murmured.

The first step of the plan got stuck, and everyone was very depressed.

The decision-making group immediately fell into deep thought again. After narrowing down the problems, many small issues would be infinitely magnified.

"It is possible to climb the slope, but it is still a bit troublesome. For us, the cost of implementation is a bit high," said Zhang Muyan.

"tell me the story"

"Actually, the principle is very simple: center of gravity control."

As soon as he finished speaking, Lu Yuning and Zhang Xinyue immediately understood.

"What?" Zou Yunxin was confused.

It’s time for the familiar “if you don’t understand, ask” segment again, but this time the tour guide is Zhang Muyan.

"Objects on a slope normally roll down because the center of gravity of the object changes under the influence of the earth's gravity."

Zou Yunxin nodded, he could understand this.

Zhang Muyan continued, "Now let's modify both the slope and the drop. The drop will be replaced with a double cone—simply put, two symmetrical cones glued together at the bottom. The slope will be hollowed out, with the sides left open and the center hollowed out. It's wide at the top and narrow at the bottom. Hang the double cone on this slope."

“This thing can climb the slope by itself?”

Zhang Muyan nodded. "That's right. When the angle and slope are right, the double cone will roll up the slope. The principle is the same as I just mentioned. As the track widens, the center of gravity of the double cone actually points downward, and the kinetic energy generated by this downward center of gravity is converted into horizontal force. The scene before us does conform to this physical structure. The weeds are tall enough, but how to control the center of gravity is a problem."

Zou Yunxin nodded and said, "I see."

Wu Xiao: "Brother Zou, do you understand?"

"no"

"."

Zhang Muyan finally had to give up the idea of teaching Zou Yunxin, but as long as Lu Yuning could understand, it would be fine.

However, although the principle is simple to explain, it is not easy to control the center of gravity. Too much needs to be done, and it seems not worth it just to realize this light source.

Lu Yuning pondered for a while, then said: "Wouldn't it be easier if we could control the weight of the boat?"

Zhang Muyan was stunned: "Control the weight of the boat?"

Lu Yuning nodded and said, "We have a gravity control psychic here. If we let him manually control the center of gravity of the ship, combined with your friction control ability, we might get some unexpected results."

"Well, this might be easier, why not just give it a try?"

An hour later, Lu Yuning brought Li Wengang, who was still busy in the branch.

He has changed a lot since the last incident. His previous cowardly character is gone, and now he looks much more confident.

Lu Yuning had already built a platform on the lawn. The weeds now looked at least twenty centimeters thick. All they had to do now was build a lightweight boat-shaped object on the platform, reduce the friction to zero, and then push it into the sea of grass before them.

The terrain near the road is relatively flat, so there is no need to worry about climbing.

Lu Yuning quickly made something that looked like a boat, one end of which was pointed, used to move through the weeds.

Everyone worked together to push it into the grass.

Before anyone could pull it, the straw boat slid out by itself.

Zero friction is an ideal state. Such an object does not exist in real life. Even with all human technology, it is impossible to create a smooth surface with friction close to zero.

So the phenomenon before our eyes was quite strange, and everyone was amazed.

The boat slid for a distance in the grass and finally stopped. Although there was no friction, the grass in front still produced a certain resistance to it.

It seems that there is no need to try the ability to move in the grass, it shouldn't be a big problem.

The main thing is to see if you can control it to climb some gentler slopes. You can basically forget about climbing steep slopes.

At Lu Yuning's signal, Li Wengang and Zhang Muyan jumped onto the Caoxing boat. Li Wengang looked around with some curiosity.

Lu Yuning and Zhang Muyan have almost explained the specific steps to Li Wengang.

All you need to do is lower the weight of the aluminum sheet that is already placed at the stern to control the balance.

Theoretically, due to the change in the center of gravity, the bow should automatically sink, and then the boat will move diagonally downward.

When the bow touches the bottom, the weight of the entire boat will be lowered, and the entire boat will be lifted up due to the rebound of the plant branches.

Then continue to repeat the previous action.

So the actual effect, from a visual point of view, is that the whole ship should be in a state of bumping up and down and constantly climbing upwards.

Of course, there is a prerequisite. Zhang Muyan must cooperate with him to restore the friction of the boat, otherwise the hull will still slide back downhill after it is straightened.

In short, this is a job that requires skilled cooperation.

The two of them started practicing quickly.

"First, control the aluminum sheet at the stern."

Under Li Wengang's control, the stern slowly lifted up, and the entire ship, under the influence of gravity, slowly slid forward and downward.

More than an hour later, the two people on the boat looked pale.

It’s not that I’m tired, but I’m a little seasick.

After many collaborations, the two have gradually become able to coordinate tacitly to control the movement of the grass boat.

The boat was successfully controlled and moved, but due to the large up and down motion, people on it felt like they were on a pirate ship.

In fact, using this method, you don't even need human power to pull it, you can move well in the grass just by relying on the cooperation of supernatural powers.

So this is also an unexpected gain. Maybe I can just sit on this boat and explore at night.

But the experience probably won’t be very good.

After the boat was built, the next step was to find a way to install the pine oil lamp on it.

With that, they were almost ready for their nighttime exploration.

As time was tight, everyone discussed and decided to start exploring the plan tonight.

(End of this chapter)