Eggs hit the earth! Fast! High score! Eggs hit the earth to the lightest 1!!!

1. A thin square handkerchief.

2. Four tenacious thin lines.

3. Some nets made of soft wool.

4. Some fluffy cotton.

5. A tough thin iron wire.

1 and 2 are parachutes.

Put the eggs in a net pocket and spread fluffy cotton under the net bag first.

The thin iron wire is folded into a circle, and is extended and supported on the net pocket by three feet, that is, the egg is covered in the middle, and when it lands, the thin iron wire hits the ground, and the egg does not touch the ground, and it is decelerated by the cotton buffer. The net is hung on the four lines of the parachute, and the four lines should be basically the same length. For stability, you can poke a handkerchief into a few symmetrical holes to allow gas to pass through during landing.

I feel like it improves stability. I don't know, hehe.

I didn't have to experiment, there was hardly a place that was so high, there was no such thing in a high place, what if I accidentally got an egg naughty and jumped out and killed someone.

The idea is good. You take the egg in your mouth. Jump off on your own.

Put the eggs in a paper cup, wrap them in a sponge, and attach a "parachute" sewn with a handkerchief of the right size. (We did this experiment when we were in elementary school, and the eggs didn't break).

Or the egg is tightly wrapped with 6-8 layers of sponge.

Find a 15cm high and 15cm diameter open milk powder tin can filled with 10cm of latex and put the hard-boiled egg in the center! You just throw it vertically! Guaranteed not to rot!

The best thing to do is to do what the American explorers did when they landed on Mars, first with a parachute, then with a power plant, and finally with an elastic shell.

Throw it into the water, a pool 15 meters high, 15 meters wide, and 15 meters long.

1. Momentum theorem expression: ft = p

where p refers to the change in momentum, f refers to the magnitude of the impulse, and t refers to the time of action of the force.

Since the egg is in the process of falling, the change in momentum p is certain, the force f on the egg is inversely proportional to the time t of action of the force, i.e., the greater t, the smaller f and the less force acting on the egg. In this way, the eggs are not easy to break.

2. The air resistance f of the object falling vertically from the air is proportional to the density of the air, the effective cross-sectional area of the object s, and the square of the falling rate v, and the magnitude of the resistance can be expressed as f=c sv2, where c is the drag coefficient, generally between, =, the object will reach a uniform velocity after a period of time, which is called the ultimate velocity.

We can find some of the following daily phenomena:

Raindrops fall through the air faster and faster, and the air resistance increases. When the drag increases to equal the gravitational force experienced by the raindrop, the two forces are balanced and the raindrop begins to fall at a uniform speed.

The parachutist spreads his parachute in the air and is able to land relatively slowly due to the large cross-sectional area of the parachute and the large cross-sectional area of the parachute. These are the applications of this formula in life.

Once you understand this, you won't think that the acceleration of the device is.

3. All objects have inertia. At the moment when the whole device of "Falling Eggs from High Heights" lands, the device is stationary, but the eggs will continue to move due to inertia, resulting in squeezing and colliding with the device, which is easy to be damaged. How to minimize the impact of eggs due to inertia still needs to be further analyzed and solved.

2) Rule Analysis:

With theoretical guidance, it is time to analyze the rules of the game. The aim is to fully consider the impact of all aspects and the problems that should be solved without violating the rules of the competition, so as to formulate a practical plan.

Since one of the major premise of the rules of the game is that the egg is not broken, once the egg is broken, it will be eliminated, and all efforts will be in vain. Therefore, the most important thing is to ensure that the eggs do not break, and then think about how to make the weight of the device as small as possible and the stability of the device as high as possible. To ensure that eggs do not break, it is necessary to strengthen protective measures; The weight is as small as possible, and the material with low density should be selected, which can be saved; The stability is as high as possible, firstly, it must be accurate, and secondly, the device is as little affected by the atmosphere as possible.

Eggs gently touch the earth or eggs!

Tumbler type:

The tumbler type is to make the whole device like a tumbler, and the center of gravity is lowered as much as possible, so that the device can maintain a stable state when falling, and ensure that one side is always on the ground. Then the protection work only needs to be done on this one side, thus saving materials.

This scheme fully takes into account the phenomenon of the previous scheme that may roll in the air, and has been improved. Its reliability is much higher than that of the first option, with more material savings and higher accuracy. The fly in the ointment is that in order to ensure that the center of gravity of the device is lowered, it is necessary to put a large mass object at the bottom, which greatly aggravates the whole device and will affect the performance of the game.

Polyhedron type: Polyhedron type is to make the whole device into a polyhedron, and fix the egg on the polyhedron with a strong rope to make the whole egg suspended. After the device lands, no matter which side hits the ground, the egg will not hit the ground, and the egg will be intact.

This solution requires no additional materials, only the skeleton of the polyhedron and a few wires, which is extremely economical and therefore significantly less weight. Because the air resistance is small, the stability is better. However, this scheme also has a big disadvantage that the polyhedron is not easy to tie, the degree of firmness is not high, and it may fall apart after landing, and the eggs are in danger.

Brine type: The brine type is equipped with a very dense sodium chloride solution to float on it, and the brine acts as a buffer material after landing to ensure that the egg does not break.

This scheme is novel and unique, using salt water as a buffer, which is safer, less affected by air resistance, and has higher accuracy. However, the device is not easy to control, if the device rolls in the air and the salt water spills, it will not play a protective role, so it is necessary to ensure that the center of gravity of the device is stable and as low as possible. The weight of such a device should not be overlooked, after all, brine is much denser than foam.

Straw group: Straw group, use several straws tied together to make a straw group, tie several groups of straws into a pyramid shape, sandwich the egg in the middle, and fix it with a rubber strip. Since the straw is hollow, it acts as a cushion.

This scheme has a wide range of materials, light weight and small size, so it has good accuracy. As for safety, it may be a little worse, and the cushioning effect of the straw is limited after all.